HomeMy WebLinkAbout20-22643 CITY OF ZEPHYRHILLS
5335-8TH STREET
(813)780-0020 22643
BUILDING PERMIT
PERMIT INFORMATION LOCATION INFORMATION
Permit Number: 22643 Address: 38345 5TH AVE
Permit Type: RE-ROOF ZEPHYRHILLS, FL.
Class of Work: ROOF REPLACEMENT Township: Range: Book:
Proposed Use: NOT APPLICABLE Lot(s): Block: Section:
Square Feet: Subdivision: CITY OF ZEPHYRHILLS
Est. Value: Parcel Number: 11-26-21-0010-15400-0090
Improv. Cost: 21,500.00 OWNER INFORMATION
Date Issued: 4/01/2020 Name: PEEPLES FAMILY CORP INC
Total Fees: 225.00 Address: PO BOX 1058
Amount Paid: 225.00 ZEPHYRHILLS, FL. 33539
Date Paid: 4/01/2020 Phone: (813)782-2989
Work Desc: REROOF TPO
CONTRACTORS APPLICATION FEES
QUALITY ROOFING REROOF RESIDENTIAL 225.00
L - 3 DRY IN ROOF INSP �-
Ins ections Required
TAPE JOINTS ROOF INSP
FINAL
REINSPECTION FEES: (c)With respect to Reinspection fees will comply with Florida Statute 553.80 (2)(c)the
local government shall impose a fee of four times the amount of the fee imposed for the initial inspection or
first reinspection,whichever is greater,for each such subsequent reinspection.
NOTICE: In addition to the requirements of this permit, there maybe additional restrictions applicable to this property that
may be found in the public records of this county, and there may be additional permits required from other governmental
entities such as water management, state agencies or federal agencies.
"Warning to owner: Your failure to record a notice of commencement may result in your paying twice for
improvements to your property. If you intend to obtain financing,consult with your lender or an attorney
before recording your notice of commencement."
Complete Plans,Specifications Must Accompany Application.All work shall be performed in accordance with
City Codes and Ordinances. NO OCCUPANCY BEFORE C.O.
NO OCCUPANCY BEFORE C.O.
C NT SIG RE PERMIT OFFI R
PERMIT EXPIRES IN 6 MONTHS WITHOUT APPROVED INSPECTION
CALL FOR INSPECTION - 8 HOUR NOTICE REQUIRED
PROTECT CARD FROM WEATHER
J I
h
City of Zepfiyrhills
BUILDING PLAN REVIEW COMMENTS
Contractor/Homeowner: I
Date Received: 3, — 2.0
Site: 3 83
Permit Type:
Approved w/no comments:❑ Approved w/the below comments. Deni w/the below comments: ❑
ALL WORK SHALL COMPLY WITH PREVAILING
CODES FLORIDA BUILDING CODE,
NATIONAL ELECTRIC CODE,
AND THE CITY OF ZEPHYRHILLS
This comment sheet shall be kept with the permit and/or plans. ORDINANCES
J 4Dtlans Examiner Contractor and/or Homeowner
(Required when comments are present)
INSTR#2020055515 OR BK 10079 PG 1875 Page 1 of 1
03/31/2020 03:26 PM Rcpt:2149830 Rec: 10.00 DS:_0.00 IT:0.00
Nikki AlvarezSowles,Esq.,Pasco County Clerk&Comptroller .
PemrkNo. PatcdiDNo
NOTICE OF COMMENCEMENL—p
Shoal . . ... . ..�/l7rQ'GL countpot I�LtSm .._
THE UNDERSIGNED hereby gNestrotica that b pranmant vAl be Made—to eerlaln teat property,and Imeccordance willr Chaptbr713;Florida Statutes,
the following 6fomration Is provided in this Notice of Comma
1. Descdplion dPmperty.Parcel tdentiricatl6n No.
3OroetAtldresa
2 General Desar�6on o1 i
3. OWffjakrmWwjprLes eetnfo n.ti' Lessseeepcontracted.forthe nt
IntmastInProperV. �YK Pr
Name of Fee Simple Tweholdor. �
Of dtferent ttom Owner Usted above)
Address
4; Contractor f
:ootrtraao,ls.Tdaph«re No.: 3
Name
Address G►y. State
Amowlt of Borth.3 Telephone No.:.
Lender.
Name
Acidness' y State
Lendaft Telephone No::
7. peisais'wdliui.the.SteDe of Florida.designated by the owner upon whom.notices.or ditr'documents may be served as.provided by
Section71&1311x8ijMS FloridaStebrtes
Name
e Address CRY State
Telephone Numberof DesWided P-MIC
13. in edition to hfmse9,the ownerdesignatas
' m receive a oopi"ofthe GJenofsNotice as provided to SeGlon 713;13(1)�):FlaiCa Statuees._.
Telephone Number dPerson-EnfrtyD-Vmted:byOwn9r,.
8. Bin date.of Nottoe gttbmmanpoment•phe oxpirabort data may not-be before Ere oomp 4on of etion•and Anal payment to the
conbeetcr,but'vA be-one.yearftord the date.of recording fmkes a efteetit dam Is spedfieq
1NARMNG TO OWNER:ANY-.PAYMENTS:MADE BY THE OWNER AFTER THE EXPIRKnON OF THE NOTICE OF COMMENCEMENT
I bLfl T iN REOORDED IMUCtA O P� SECTION FLORIDA SBYOURPAYI CEMPROPER FORIMPRO BENTSTY9R � Ty ..AANOC F OOMM54diNf AND
E
AND POSTED ON THE.JOB SITE WORE THEFIRSTINSPECTICU IF YOU.INTENDTO OBTAIN FlNAMISIG;CONSULT
-WITH YOLK LENDER GRANATTORNEY'BEFORE-OOMMENCING WORK OR RECORDING YOUR NDTICEOF•OOMMEWa4ENT..
Unix PamaRy of perJury;t dedaro that Lhavaread the foregoing.notice.of'comnencement and thatthe facts staled therotq a 'true m the best
otmy.ImoNtedge and.beUef
STATE:OF FLORI��i}¢���
COUNTY OF
Slgnahrre -owner or Lessee,or• a Authoitzed
Offceriam tor/Paftewanager
The foregoing lnstrurtrardwas admavdedped before me:thisl—Idey offv(Q rc_ '.211&b,- &n 1P 5 7 J ./ee a ,P C .
d• (type of authoif o
aa;o r,trustee,aftmey tow. for
f,'� .instrrarrentvvas
Personalty.Known0Q$Pmduced.Identif'rr�t'n, Wfary,Slgnatu
Type of IdentilWft Produced ►tame(P�1nh, �`
LYNN MGM
MY Cp {pH i{dG YY2808
EWMIA ch15,2M
• .. @ondeallw
PIIDI101111dN1NIIkM1
� eement�c053D43 - _ .
e� State Of Florida,County Of Pasco
This is to certify that the foregoing is a
true and correct copy of the document
* In Cyodl�'�7rust o on file or of public record in this office.
n
W' e y handano official seal this
18$7 Nikki Alvarez-Sowles,.Esq.,Clerk&Comptroller
Pasc unty,Florada
�� BY.> — De uty Clerk
813ae0=0020 City.of Zephyrhills Permit Application Fax-813-780-0021
Building.Department•
Jqd
Phone,Contactcfor,:PerrnWin
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BU LDING` ACU O •�O --TA 'N TF�! -
EL•EC. RICAL.T. $. AMP?SERVICE: DUKE ENERCY.�.: tE;C:.
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MECHANICAL $ VALU/ltION OF MECHANICAL INS TALiATION`
OGAS ROOFING.:.
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FINISHED F.L'OOR LEVAtION5 p E,
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BUILDER CM,PANY:.;..
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SIGNATURE '
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ELECTRI,CIAN'. COMP r
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SIGNATURE: 'w
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MECHANICAL—,,',
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-:Address,..,
E t tERED:. ::icYx/i>t�}a,. 3c:V,t-FEE;EURREA`
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t i �d:: Y '3�•' -
, � 'W`Re` 6 ;cons•"t3do _
•z t:� la s'i•2`�Sefa•�df�lldi :'I'errs'`�'1� t. Kg _s:, a
RE�IDEN'hA1:. ':Attg�j(�)..�a.•_n,.• .T.e^+.. ;� �� �: •:. �;. ;,�',-::•:•''':::.;: -
nAAlnteFiiiiiitr'3�0'i( orliih" daysait`ersGtiitiitlaferR_ t :Constri�ctloti=F1'rt ;S�orirafe%P..fi�ii�:C:$ilt�t=e�tce,fr,sfallsd�.r
Sanitary FBCiItUes: 1.tJumpstpr;�51t .:Wotk!?efirilt°8r.s idfillsiori3Al i�prujects' =
h 2 .lete8 s t§of,Bi�Ldl Plan"s' is;a., f sPage {1sj'?set`of EnergyEorm ;R=O=W RerrWtfo'r newsi tilt coon
COMMERCIAL Attac,:.(..)''cc .p I.,l�9.. ppf- , bra., ;
' as `ii "i` e�•< e'G':risttCoiisfm; o f" :RS:form`.�af�r+ 3¢ : ia(silt,Fence 1rlskalled„
tUllritrHUm'`tefr'(10).workina. Re te;. 4ta t•;.�Re,4l Q .?tsP.g► "t.
Sanitary:FaC111tres;&:1 tlair�cSf rr.Si�e'IVork rtntf>for:all:new ro)ects:Al(commerdal:fbdutW ents;mu?;t'it ee`t_dbmpltAn •. ,.,
SIGN PERMIT' Attacfi"2'%efsrofaEn"iltesr@i)PlafiS;::•.;;,:=;;rr,.
••••PadPRTX RVEf`requl�edfdcalt:N�Wcoiisfniition:'
cc
'�rc•
Directions: - .
Fill.out application compl®tely.
:Owri��YsCoritvctor:�ign, acic ofepsljcation notarized^ .
•• -1f bViEbr S2�i10;a Notici:of:Comm®ncement a required: :(ac.u f radee over$rsot►):
Agent..(for he contractoi)or.Power.of Attomey.,�(fbr:(he otNner)would tis'somebria wiUf`not8B dd;letter frotn:bwrtierapth6rrizipo'same
OVER;T"E:CQUNIrER..PERMITTING. -.,r(oQR�!;ofcotfr��requiped)= =
�;.. . . .
Reroofslf-sliingles Sewers Service<L�dl rades AlC' '''Fehces.jPlot/Suniey/Footage)
Driveways-Not over Counter if on.publlc roadways:.needs ROW:' :
NOTICE OF DEED RESTRICTIONS: The-un`dersighed-understands that-this permit-may be subject to"deed"restrictions"
which-mray_.be-mare;restdcti�e-than.Gounty:.reguiations. The undersignedpassumes-,responsibiil.,complianct4:�n►ith;any
applicable-deed,restrictions:,
URMLIGENS'ED; QO;t Y1tr�11C ORS AND=xCONTItAG�7OR RES Q SIBI if1 lE5' if=tt a Xoitviie has'liir..ed corttractor or
contractors to undertake work,,,:t
, y a tvha eatb the
•.contractorYii-�not-license d,,as required by law, both the-ewner-anc violation
under state--law; if the owner,ora;ip#ended:;con#ractor<are uncertain as to what.lice en .May,, ye 6'the
-intended wor,.they=arwadvised to contact the Pasco`-County'Buildit`tg=ltts ectior(091916 icensing Section at`727-847-
8009: Furthermore, tf the ownerees; lireis;ja:contractor or'.contrrcCoi's,:,he•,is.advised,.to have the contractor(s) sign
portions:of.'the""eontractttir Block of:thin:appt(eatiom for.which:they...w.!!(*e ;asp .oible.,;.if you, as the•owner sign as the
contractar;_-that may be an�iridication thaf he is not properly iicensed••and Is not entitied.,-to-permitting-privileges in Pasco
County,:.:
TRANSPORTATION IMPACTIUTILITIES`IMPACT.AND.RP-366 CE RECOVERY FEES: The undersigngd jinders#apds
that-Transportetlori�irnpactrFa6s-.and BecoutseRecove*-F.ees:,may appty�to:,therfconstruction,;of,rlew buildings;b iarige of
use to°eiiisting~buiidmgs;or'exaans(on of etc sting butldings, as specified-in Pasco bounty Ordinance,-numbar.$9-07.and
90-07,, as.amended.:..:The;.undersigned-also;,ur derstaiti" :thafi�stach fees,as trtay be dues will=be identfied*at tF�e tiia+e of
tr , \
permitting. .It li,30RtherYtanderstoe'd—that ' ieportation:Impact-fees and Resource'Recovery Fees must be:paid•prior to
receivlrlg$a�'zor, ficp#e:of.occups(n,0+t nr fillSApow x0Iease.,,1f ie-pro1ecVdoe�ndVlnv0tue4p certifica(64 "occ ipa 40 or
final-,power release,-the-fees..must-be-paid prior to permit fssuarlt a. lf&thermo if Pa'sco_rCounty Water/Sewer Impact
flees are.due;°they.must_sbe_paidWpr or or, rtr i suan0e in accordanc6,*11h appliegibllb:-
Pisb6iCounty.lordinahoss:
certify:thatwl =thb jai P)can#;.:faave:a eras pfouidedldw� tautCOC�V (Cip e Constr�nc'otifiwn oLriiet nis r$L a;w i—Q4H:0o0nxoero�rwr�onreer,s iC oS „a �ameBad) € a,CONSTRU N ir' 11 atio
th:a: opy-Giu.th dau I
'Protection Guide".prepared by.the.Florlda!:Qepartment of.Agriculture,and-Consumer-'Affairs.;:If'therappllca*Js tsemearwe
other•,thart the owner" .W tify�tl, %b e'o�tbified�a-cop .of2tt a etiove tlescri) jocuii ent and-prom In good faith to
deliver it to the°owner":prior..to:comms �e�ectt.
CQNTR!ACTO 'S/:-`1)11 �F1[5 A .,ci�rtify.that lj;tlY fo*mattQp;in th s. P iidatioa:is:eQci ere artd: hat:.alX�work
.. . .-..�.�..����. �.��� u� .. _ . .. � ud` �, � plication is
Will beAd ieln compliance wit �ppii idle laws.regulating:construction, coning and�ariil�:evetopme t: -. p.
hereby made to obtain a permit fa!fiiiviord==iii5falltt# a4 'tifteated. i...certify,that no worts or•installation has
commenced.plior to Issuance,of,_a.;permit and..that all work wiE!°be,perfatr>ief:t+�_;iiieeti:stendards of all:claws-:r.-egulating
c:oni6`6etioni-County•andii6fl, e; zoz~.it3g:regulations, n f leer ev..eiopment regulations in the Jurisdic'tiah:�• I also
certify that I understand that the regulations of other:government.agencies,may applypto-the.intended work,-and i that•it is
my responsibility.ta Identify.what actions4l:must take to:be:�in compliance. $uch agencies tnciutte but ardmot,'Imilted to:
Department of Environmettfal-�P-rotection-Cypress Bayheads,+Wetian.&Area&,and;Environmentally Sensitive
Lands,WaterMaste ;a
Southwest Florida WW. f Management DistridVells, Cypress.., Bayheads, :'.Wetland Areas, Altering
Watercourses.
Army Corps•of Engineers-$ ills,:Docks:_Navigahl*Water ways
Department okHeaithar$r F ehai ilitativa�Services/Eh-vironmentat'Health Unit-Wells;�Wastewa`te0;Treatrnerit;
Septic,Tanks.
. US3Erlyiinrri'entaiFtdtxtiotirrtaYAsbestosabatement .
~FederatAiriatii3ri Aiitfo>trtytAt�l•`i-iajrs
I understand•,thALthie following rye dtiO S t� ly o:the:use�of
U$ �Qf f�;iis.:nof' Il i b' ih f3loads's00.res_`s,I ermitted:-
if"the #ill:matey al;is .to.,be-use'd in Fidod•,done °1 if as'un erstaod`#hat a drainage pion addres_.•sing a
°conapensa#inghvoirrii ' rNilt;t�e4sut rAided•at4imei oPper;r.1%,,w :h1,c -3s�„.gl Paretlkby;:a prRfessionai'engineer
licensed by IN&State of-Ftorlda.
I#;:they:filk�q1riaterJ9LAis#a be,,tys tt irtpt<iood zip }°0- ciannection with a permitted building using.'ste'ja.,4 call:
constrt;talon,..l;certitji°°ti at fiiA i�l�4t� d only.; p.f ll t amaaw?rriti:imitwolem:wall;, _...
tf fill material is .to;,:be.::used in•.any area, I.certify that use.of-such•:fill°will not adversely affect.,a�ijacent
properties:�tf�use of fi lY;is.,;:fourack ta,adversely-affpot adjac e0tV.ope�f0V;Jhono0,11ar,zMay�:ba sited for violating
the conditions of the building.permit issued.und9r;the-attached permit application;for lots less than, -
acre r�+irtalch are:e levato+z-byNflN,s:an ongineered.t Trait age pion'is required.
If I,am4he.,AGENT,'0R.' I 'C?1Nj�ER,°i p'rom'ise in good.falth�ta-In'fortn the.owner,of:tt e•-'permitt(ng'.coriditions set forth in
this:afri_davit:priorto:commenajhg,ct p;,lruction. I understand..#hat.aseparate•.permit,may,be required for electricalkwork,
plurntiing;Ysrgns:°welts;;pools airy.eonditioning;:gas;,or neliad6d"in4.the4pplicatlon. A
permit issued:shall-be.•construed:to-be a-.license-to:proceediwith-,�the.work.and not-as authority to•violate, ;ancei:F{•,alt
set side anyproulsioras•a .the teehriicai'+co es;.r3or shall lssuartce,of apermit=prevent.the,:Building 0fi icigl;.tornV*rieaffer
requiring.a-correctjorl,of=error-s in plans,construction or violations;0'any-bodes'. Every permitTisstied`�sliall become.invalid
unless;•the.work.autho ized-bysuch:iper.mit lscommenced•.within,.six.months,of_perrnit issuo—ncea:.or.,.if.,worlt•authoribd&by
the~permit•is-suspended'or•abandoned`for a,per�iod'-of..:six(6).months after-.the:time tt e:work is""commenced An extension
may-•be.requested,';in;writing.,ftom.the Building tNfic(al fo a eribd not to exceed ninety(90)days and wilt demonsti to
justifiable causer fQir#he.,;ex#ens Oii.i If work leases far•ninety iM�0)`consecutlue:•days,:fhe.job,is consider:.ed:.abandoner,
WARN NG T,"—WNER: LURE;TO:•RECORi01�A�:NOTI,0FQF C.GMMENCEME:N'f NfI�Y:.F ESULT"IN O,UR..
r x . x _
PAYIMC�' AJ1iriIAIIPCt �/EMIe!°S5��'T`1Ulrl *TI;tI� lt '1 .�1�" I �INIk�ND' O:C TAIN: iI ;!~1N41N�ir C 'I�S'1;�L'''T ,_
WITH,.YOU DEIC61kfAfi�1 AT'I` Rt� Y�i FO1 E'"tr C:� ING YOUR N.CiTiC w+i iliGi a -- --- - -
FLOi2iiaA
OWNEROR-AGENT;. CQtHTR7G7�Oti
Sub ssitbea}ah-di-SA n4 (oi�taflir±ne jrts fohe�metttits= :Suttis kikte ands riisio(cka
Who is/are personally known to me or has/have produced Who is/are pe aity;korme;vr°Mas/1z ve proilu' '
as:ldendficatton: =r." 's iilisiiUf�+catli n.t:;
Notary Public ° Motarlyl io
Commission No. Comma'
JACQUUME BOGES
Name of Notary typed.printed or stamped Aame;of �fyi+flis�i®rr ►sit#A�Z:-
Exor%December 12,2022
gpiAwTtuufirov Fain lnsumn 80Q?8rtol9
1 .�
11 4
City of Zephyrhills
BUILDING PLAN REVIEW COMMENTS
Contractor/Homeowner:
Date Received: 2o
Site: 3-0'3c"
Permit Type:
V
Approved w/no comments:El Approved w/the below comments-. Deni w/the below comments: ❑
ALL WORK SHALL COMPLY WITH PREVAILING
CODES FLORIDA BUILDING CODE,
NATIONAL ELECTRIC CODE,
AND THE CITY OF ZEPHYRHILLS
This co ent sheet shall be kept with the permit and/or plans. ORDINANCES
K-dvMS"zer fans Examiner 4Dte Contractor and/or Homeowner
(Required when comments are present)
Bradley Muller Roofing LLC
S
J
Licensed- Bonded-Insured
tate Certified#CCC1328205
Free Inspections&Estimates
William M.Stephens Residential-Commercial-All Roof Types Bradley B.Miller
813-312-7338 30 Years Experience 352.467-2001
Email: bradleymillerroofing@gmail.com
PROPOSAL SUBMITTED TO WORK TO BE PERFORMED AT
Name ��s -�a�M i�y L Streeter r5 3,;1 5 i �f
Street �i �_nc IV 19' City Z7"^ -I i �
City � Ff�f�6 I� /j-� S State _ Zip '335
State . 4 d zlw f Zip 3 5 9 Owner of Property
Phone Number ,f/3-7-5 "5e ax Phone Number 5,fFax
We hereby propose to furnish all the materials and perform all the labor necessary fort e completion of:
2ve existing single roof ❑ Replace bad fascia boards at$ ?11A per foot
��move existing built up roof ® Install �feet or ridge vents
M Dry-in with D Synthetic &reel &Stick ❑ install Master Rib Metal Roof System
GI Install new galvanized valley metal ® Install 1" Insulfoam
U Ins I new lead trots 9 Install 2"Insulfaam
O install new exhaust vents El Install 25 yr.fungus resistant 3-tab shingles
Cc Install new drip edge, 'L. � color 12 Install 30 yr.fungus resistant dimensional shingles
El Install new flashing as needed v_lr> C3 Shingle manufacturer color
Q Replace plywood at$ per sheet C'Install TPO,white rubberized roofing membrane
L1 Replace rotten trusses at$ L1 per foot Other:
Woodwork is an additional charge,see pricing above.
t' r
Year Leak and Workmanship Warranty
All material is guaranteed to be as specified, and the above,work is to be performed is accordance with the drawings and
specifications submitted for above work and completed in a substantial workmanlike manner for the sum of$ Cis a=°`
with payments to be te `
made Payment follows. due in full on or�Mp_tion,unless athenvise noted. Thank You.
/60-0C)r ti� l
d K ja CG Q4-lef- ! S _ec,)L«`.0 Credit cardZu
ccepted, additional 4%charge.
Any aherafion or deviation frorn above specifications hrwbving extra cost witl &Z, /rye✓
be executed only upon n orders and hi m hill become an extra charge over
and abova the estimate.Ali agroaments contingent upon strips,acc;6mts cr
delays beyond our control.owner to carry fire.tomado and other necessary ffieer/Agent
insurance upon above work.Co.:tpex atlon and Public Llabiiiy insurance on
above v:ork to ba taken out trf Routing Cocdra^=r. Note:This proposal may be withdrawn by us if not accepted
within 6J days.
Client gives permission to drive on driveway to deliver materials.
_ ACCEPTANCE OF PROPOSAL_
The above prices,specifications and conditions are satisfactory and are hereby accepted.You are authorized to do the work as
specified.Payment will be made as outlined above. �t.
Accepted �iycn: / U���,�11%, Signature
Florida Building Code Online 3/9/20,12:40 PM
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Product Approval Menu>Product or Application Search>Application List>Application Detail
• FL# FL3443-R31
Application Type Revision
Code Version 2017
Application Status Approved
Comments
Archived
Product Manufacturer GAF
Address/Phone/Email 1 Campus Drive
Parisppany, NJ 07054
(800) 766-3411
mstieh@gaf.com
Authorized Signature Robert Nieminen
Ireith@nemoetc.com
Technical Representative William Broussard
Address/Phone/Email 1 Campus Drive
Parsippany, NJ 07054
(800) 766-3411
Technica[QuestionsGAF@gaf.com
Quality Assurance Representative
Address/Phone/Email
Category Roofing
Subcategory Single Ply Roof Systems
Compliance Method Evaluation Report from a Florida Registered Architect or a Licensed Florida
Professional Engineer
= Evaluation Report-Hardcopy Received
Florida Engineer or Architect Name who developed Robert Nieminen
the Evaluation Report
Florida License PE-59166
Quality Assurance Entity UL LLC
Quality Assurance Contract Expiration Date 12/16/2022
Validated By John W. Knezevich, PE
v' Validation Checklist-Hardcopy Received
Certificate of Independence FL3443 R31 COI 2019 01 COI NIEMINEN.Ddf
Referenced Standard and Year(of Standard) Standard Year
ASTM D4434 2012
FM 4470 2012
https://www.floridabuilding.org/pr/pr_app_dti.aspx?param=wGEVXQwtDgvbK%2bEQBZ8goaV75QzwlC332NDJXvYON%2faIhwa4DQdWGA%3d%3d Page 1 of 2
Florida Building Code Online 3/9/20,12:40 PM
a
FM 4474 2011
TAS 114 2011
Equivalence of Product Standards
Certified By
Sections from the Code
Product Approval Method Method 1 Option D
Date Submitted 12/11/2019
Date Validated 12/11/2019
Date Pending FBC Approval 12/18/2019
Date Approved 02/11/2020
Date Revised 02/12/2020
Summary of Products
FL# Model, Number or Name Description
3443.1 EverGuard PVC Single-Ply Roof Internally reinforced thermoplastic roof covers
Systems
Limits of Use Installation Instructions
Approved for use in HVHZ: No FL3443 R31 II 2019 12 FINAL Al ER FL3443-R31.Ddf
Approved for use outside HVHZ:Yes Verified By: Robert Nieminen PE-59166
Impact Resistant: N/A Created by Independent Third Party: Yes
Design Pressure: +N/A/-502.5 Evaluation Reports
Other: 1.)The design pressure noted in this application L3F 443 R31 AE 2019 12 FINAL ER_FL3443-R31.�
pertains to one specific assembly over one specific deck type. Created by Independent Third Party: Yes
Refer to the ER Appendix for all deck types,systems and
maximum design pressures. 2.) Refer to ER Section 5 for
Limits of Use.
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Contact Us::2601 Blair Stone Road,Tallahassee FL 32399 Phone:850-487-1824
The State of Florida is an AA/EEO employer.Copyright 2007-2013 State of Florida.::Privacy Statement::Accessibility Statement::Refund Statement
Under Florida law,email addresses are public records.If you do not want your e-mail address released in response to a public-records request,do not send electronic
mail to this entity.Instead,contact the office by phone or by traditional mail.If you have any questions,please contact 850.487.1395.*Pursuant to Section
455.275(1),Florida Statutes,effective October 1,2012,licensees licensed under Chapter 455,F.S.must provide the Department with an email address if they have
one.The emails provided may be used for official communication with the licensee.However email addresses are public record.If you do not wish to supply a
personal address,please provide the Department with an email address which can be made available to the public.To determine if you are a licensee under Chapter
455,F.S.,please click here.
Product Approval Accepts:
® ® ® EChEcI.
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Safe
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1
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AB OF CONTENTS
EverGuard0TP0/PVG •o Ro, of bg 1 Requirements
I'Welc
i
Who Is GAF? 3
What Is In This Manual? 3
What Are Our Products And Services? 3
A Few Things To Consider 4
Program
General 5
GAF Certified Contractor Program 5
Inspections 5
Special Conditions 5
GAF Roof Guarantee Program 6
TPO System Guarantee Requirements 7
PVC System Guarantee Requirements 8
floe Design Considerations '
General 10
Sustainable Design 10
Building Utilization 10
Tear-off or Re-cover 11
Roof Decks 12
Parapet Walls 14
Roof Drainage 14
Expansion Joints 14
Area Dividers 15
Equipment Mountings 15
Fire Resistance 15
Wind Performance 15
Energy Efficiency 16
Water Vapor Transfer 16
Air Barriers 18
° 1 ° In6tallotion Specifications
Y
Design Tables 19
Attachment Tables 23
Specifications 28
1
TABLE OF GONTENTS
1O TPOZPVC '0 Roof ingSystem;Ovorwewo General Requirements
1 ' 1n,Considdrations&'Applicafion1 '
1 Roofing
Part 1: General
1.01 System Description 37
1.02 Specification Designations 37
1.03 Regulatory Requirements&Pre-job Conference 37
1.04 Delivery,Storage&Protection 37
1.05 Environmental Requirements&Restrictions 37
1.06 Working Environment 38
1.07 Safety Considerations&Warnings 38
Part 2: Products
2.01 Membrane 38
2.02 Flashing-Wall&Curb 38
2.03 Flashing Accessories 38
2.04 Fasteners 39
2.05 Adhesives,Sealants,Primers&Cleaners 39
2.06 Traffic Protection 39
2.07 Insulation 39
2.08 High Traffic Applications 40
2.09 Cover/Re-cover Boards 40
2.10 Base Sheets 41
2.11 Slip Sheet/Protection Layer 41
2.12 Other Accessories 41
Part 3: Execution
3.01 Site Conditions 41
3.02 Preparation of Roofing Area-New&Tear-off Applications 41
3.03 Preparation of Roofing Area-Re-cover Applications 41
3.04 Wood Nailer Installation 42
3.05 Gypsum Board Installation 42
3.06 Air/Vapor Retarder Installation 42
3.07 Polymat Slip Sheet Installation 43
3.08 Fire-Resistant Slip Sheet/Coating Installation 43
3.09 Base Sheet 44
3.10 Re-cover Board/Insulation Installation 44
3.11 Membrane Installation 44
3.12 Flashing Installation 49
3.13 Traffic Protection 54
3.14 Temporary Closures 55
3.15 Field Quality Control 55
3.16 Clean-up 55
3.17 Maintenance 55
Note: Refer to www.gaf.com for a complete list of Product Data Sheets.
2
WELCOME
Thank you for consulting Version 2.0 of the EverGuarc' RESIDENTIAL SHINGLE PRODUCTS
TPO/PVCMechanicallyAttached Roofing System Over- •Lifetime Designer Shingles...Camelot II° Slateline°
view dr General Requirements Manual You can find Grand Canyon',Grand Sequoia',Grand Sequoia°
further information at www.gaf.com,or call 800-766-3411. ArmorShield,Grand Sequoia°Reflector Series,Woodland",and
Glenwood°Shingles
WHO IS GAF? •Timberline'Roofing Shingles...Timberline Ultra
Founded in 1886,GAF has grown to become North America's largest HDe,Timberline Ultra HD°Reflector Series,Timberline
manufacturer of commercial and residential roofing.Professional HD ,Timberline HD®effector Series,Ti berline Natural
roofing contractors have long preferred the rugged,dependable Shadow°,Timberline ®erican Harvest', imberline HDZ,
performance that a GAF roof can offer.We are the leading roofing Timberline Cool Series ,and Timberline ArmorShield—II
manufacturer in North America,with plants strategically located •3-Tab Shingles...Marquis°WeatherMax°and Royal
across the U.S.A member of the Standard Industries family of Sovereign°
companies,GAF is part of the largest roofing and waterproofing •ThermaCal°Nail Base Roof Insulation Panels
business in the world.
For roofing contractors and distributors: ACCESSORY PRODUCTS
•Helping to build your business and avoid hassles ®We offer an extensive line of accessory products for our roof
systems,including:EverGuard TPO and PVC Prefabricated
Accessories,Single-Ply Adhesives,Primers&Sealants;Matrix"
For property owners and architects: Coatings and Cements;Drill-Tec®Fasteners;M-WELD°
Preflashed Accessories;Metalastic Expansion Joint Covers;
•Helping to assure your best choice in roofing Lexsuco°Roof System Accessories;Cobra°and Master Flow°
Ventilation Products;Timbertex°Premium Ridge Cap Shingles;
WHAT IS IN THIS MANUAL? WeatherWatch°and StormGuard°Leak Barriers;Shingle-
WHAT Deck-Armor ,Tiger Paw—and Roofpro-Roof Deck
This Manual contains the following sections: Protection,among others.See www.gaf.com for complete
•Welcome product offerings.
•Guarantee Program
SERVICES
•Roof Design Considerations
•GAF has a network of field representatives and distributors to
•TPO/PVC Installation Specifications supply and service its quality roofing systems throughout
•Design Considerations&Application Guidelines:Mechanically North America.
Attached Roofing Systems •Our GAF Technical Support Services is an assistance service that
allows you to contact us directly to speak with a representative
WHAT ARE OUR PRODUCTS AND SERVICES? about specifications,applications,code approvals,and product
information.The GAF Technical Support Services number is
No one offers a wider range of reliable,proven,cost- 800-766-3411.
effective roofing solutions: •Our CARE(Center for the Advancement of Roofing Excellence)
COMMERCIAL PRODUCTS program trains industry professionals in safe roofing techniques.
•EnergyGuard—Insulation Professional,educational programs geared specifically to the
•EverGuard Extreme'TPO Single-Ply Roofing Systems roofing industry—given by experts in the roofing industry.
•Architectural Information Services(AIS)is a specification
•EverGuard°TPO and PVC Single-Ply Roofing Systems service that helps you to specify an approved GAF roofing system
•EverGuard°Freedom—TPO Self-Adhering Roofing based on your specific roofing needs and will send you a general
Systems specification for that roofing system,as well as application
methods,product description,and detail drawings.The phone
•RUBEROID°SBS and APP Modified Bitumen number for AIS is 800-522-9224.
Roofing Systems
•Our Tapered Design Group(TDG)is one of the many services
•LIBERTY"'SBS Self-Adhering Roofing Systems available to our customers to help reduce their hassles.We
•GAFGLAS°Fiberglass Built-up Roofing Systems provide tapered insulation take-offs for architects,contractors,
and distributors nationwide.Just send your roof plans and
•United Coatings" Liquid-Applied Roof Coatings specifications to tdg@gaf.com.The phone number for TDG is
•HYDROSTOP°Liquid-Applied Roof Membrane 800-766-3411.
•StreetBond°Pavement Coatings •Visit GAF on the web at www.gaf.com for extensive product
•GAF LiveRoofe Garden Roofing System information,specifications,and technical literature.
3
1
A FEW THINGS TO CONSIDER...
•This Manual contains the latest information relating to
the application of GAF's Mechanically Attached Single-Ply
Roofing Systems and is based on our years of experience in the
commercial roofing field.It has been prepared as a general
guide to assist architects,engineers,roofing contractors,and
owners in the use of our roofing systems.
•GAF manufactures and sells roofing materials and does not
practice architecture or engineering.GAF is not responsible for
the performance of its products when damage to its products
is caused by such things as improper building design,or
construction flaws.
•The design responsibility remains with the architect,engineer,
roofing contractor,or owner,and construction details illustrated
and described herein are fumished solely for guidance purposes.
These guidelines should not be construed as being all-
inclusive,nor should they be considered as a substitute for good
application practices.
•Under no circumstances does GAF have any liability for
expenses arising out of or associated with the pre-existing
presence of asbestos-containing materials or any other allegedly
hazardous substances or materials in or on the roof to which
the new GAF roofing materials are being applied.
•Information contained in this Manual is presented in good faith
and,to the best of GAF's knowledge,does not infringe upon any
patents,foreign or domestic.
•As a part of its continuing efforts to improve the performance
of its products,GAF periodically makes changes to its products
and application specifications.The Company reserves the right
to change or modify,at its discretion,any of the information,
requirements,specifications,or policies contained herein.This
Manual supersedes all catalogs and previous manuals.
4
GUARANTEE PROGRAM
GENERAL INSPECTIONS
GAF offers roof guarantees for a fee for all roofing tem GAF will inspect only those roofs where a guarantee is to be issued or
specifications published in this Manual when instZed by GAF where special inspection services have been agreed to be purchased
Factory-Certified Low-Slope Roofing Contractors in accordance prior to the start of the roof construction and the current charge for
with the terms and conditions set forth in this Manual,and the the guarantee or inspection services has been paid.If an inspection
procedures for obtaining a guarantee are followed. is requested and the job is not ready or the owner's representative
All gguaranteed roofing systems must be flashed in accordance with is not available when GAF arrives onsite,GAF reserves the right to
published GAF flashing requirements and details.All GAF insulation, charge for such visit.
fasteners,pre-flashed details expansion joint covers,cements, GAF reserves the right to waive inspection of guaranteed roofs when,
coatings,and accessory prodlucts as job appropriate are required for in its opinion,inspection is not necessary. In such cases,the owner
guarantees unless otherwise approved in writing by a Field Services or designer may request a special inspection for which an additional
Manager or Director prior to installation. charge may be made.
GAF will be the sole judge as to whether or not a roofing guarantee Any inspections made by GAF are for its sole use onll,and do
will be issued to cover any proposed or completed roof.The not constitute a waiver of any of the terms and conditions of the
issuance of a guarantee and its effectiveness or the continued guarantee.
liability thereunder is contingent upon payment of GAF's guarantee Should a GAF Field Services Representative observe conditions on
fee and payment in full to the roofing contractor and materials the job site that do not conform to the requirements of this Manual
suppliers. or standard good roofing practices,such conditions will be brought
GAF has no obligation to issue a roofing guarantee on any roof.Any to the attention of the roofing contractor.GAF,at its sole discretion,
inspection prior to issuance is solely for the benefit of GAF and does has the right to require corrective action as it deems necessary
not constitute a waiver or modifiction of any terms or conditions to conform to the requirements of this Manual and its standard
in the guarantee.In the event that a roof system does not conform requirements for theissuance of the GAF roofing system guarantee.
to GAF's standards and a guarantee is not issued,no portion of the
guarantee fee is refundable.
GAF will not accept Notices of Award of Contract that indicate SPECIAL CONDITIONS
that the owner or architect has the option to accept or reject the A arantee will not be issued to cover less than the entire roof area
guarantee upon completion of the roof. of a�single building.
Specifications not listed in this Manual may also be eligible for GAF GAF will not issue a roofing system guarantee for the
guarantees.For further information on guarantee requirements and following without prior written approval from the Field
for approval of modifications to published specifications,consult Services Manager or Director:
with GAF at 800-766-3411. ®Over any surface or deck not covered in this Manual
GAF is not responsible for consequential damages under any •Over a cold/freezer storage building,unless a ventilated plenum
circumstances.Building owners may make reasonable and isolates the cold/freezer storage area from the roofing system
customary temporary repairs at their own expense to minimize and substrate
damage to the building or its contents in an emergency.
A GAF guarantee may be cancelled subsequently by GAF for violation ®On storage silos,heated tanks,or domed structures
of its terms and conditions. •On structures having conduit or piping between the roof deck
and roofing membrane,unless the conduit or piping is installed
GAF guarantees may be eligible for GAF WeIlRoof°guarantee in channels below the top deck surface
extension.Consult with GAF at 800-766-3411 for eligibility
requirements. •On roofs that have an inadequate number and spacing of
expansion joints or curbs
GAF CERTIFIED CONTRACTOR PROGRAM !On systems constructed with insulation not approved by GAF
GAF does not install roofing systems.GAF does not own roof ®On any structure where there is limited or no access to the roof
contracting companies or have any interest in companies installing •On a roof designed for or used as a water-insulated or spray roof
roofing systems.Accor-i GAF shall not be responsible for any •On promenade or parking roofs
roofing contractor' as workmanship except as specifically covered
under the terms and conditions of the GAF roofing guarantee issued •For any structure where high-heat or humidity conditions exist
for a particular project. such as but not limited to,breweries,creameries,laundries,
The term"GAF Facto Certified Low-Slope Roofing Contractor" textile mills,pulp and paper plants,swimming pools,shower
Factory-Certified P g rooms,and canneries
only identifies a contractor eligible to apply for a GAF roofing
guarantee and is not intended to convey any other meaning.GAF •When roofing over an existing roof system that contains
Factory-Certified Low-Slope Roofing Contractors are not employees, moisture,that is not fully adhered to the substrate or roof deck,
agents,or representatives of GAF. and/or provides an improperly prepared surface
GAF will issue a roofing system guarantee only for roofs applied by a ®On plywood/OSB decks not conforming to APA requirements
GAF Factory-Certified Low-Slope Roof Contractor.The responsibility ®On roofs containing sprayed-in-place polyurethane foam
for proper application of the roof lies with the Factory-Certified
Low-Slope Roofing Contractor alone.It is the responsibility of •Any unusual condition not specifically approved by GAF
the building owner and his designated representatives to enforce ®On an high-temperature condition that allows the roof
compliance with specifications and good workmanship practices, membrane temperature to exceed 160°F(71°C);or 195°F
and such enforcement is not an obligation of GAF. (90°C)for EverGuard Extreme°roofing systems
5
1 • 1 • • 0 • l
GAF ROOF GUARANTEE PROGRAM
GAF offers an extensive selection of roof uarantees to meet the needs of most building owners.The following uarantees are available for use
with selected EverGuard®Mechanically tttached Roof Systems when installed by an eligible GAF Factory-Geed Contractor.Please call 800-
766-3411 for additional information and specific guarantee requirements.
EverGuard®Roofing System Guarantees Length of Coverage
10 years
15 years
Diamond Pledge—NDL Roof Guarantee
s Up to 55 mph wind coverage 20 years
25 years
30 years
10 years
System Pledge:'Roof Guarantee 15 years
20 years
Weather Stopper°Integrated System Limited Warranty Up to 20 years
WellRoof'Guarantee Extension*
!Coverage:25%longer term Up to 35 years
*When certain requirements are met,GAF will extend its Diamond Pledge'Guarantee by up to 25%for a maximum of 35 years.Please call
800-766-3411 for qualifying specifications and detailed information.All work must be completed by a GAF Certified Maintenance Professional
(CMP).See WeURoof°Guarantee Extension for complete coverage and restrictions.
Note:Refer to the TPO/PVC Guarantee Requirements for maximum guarantee lengths and additional requirements.See pages 7-8.
6
GUARANTEE PROGRAM
TPO SYSTEM GUARANTEE REQUIREMENTS
EVERGUARD®TPO ROOFING SYSTEMS-MECHANICALLY ATTACHED
15-,20-,25-,AND 30-YEAR DIAMOND PLEDGE®NDL ROOF GUARANTEE REQUIREMENTS
The following is a summary of the requirements for the installation of an EverGuard®TPO adhered roofing system in order to be eligible to receive an NDL roof
guarantee.The selection of membrane type,thickness,and attachment is the responsibility of the architect,engineer,owner,or roof consultant.GAF EverGuard°
roof membranes must be used in roofing systems to be guaranteed by GAF.
TPO Guarantee Chart
Maximum Guarantee EverGuard Extreme®TPO EverGuard®TPO
Attachment Method L Insulation Requirements
Length Membrane Membrane
15 years 50-80 mils 45-80 mils As required by Insulation Attachment Table(s)
Mechanically 20 Years 50-80 mils 60-80 mils As required by Insulation Attachment Table(s)
Attached 25 Years 60-80 mils 80 mils Minimum of 2 layers of approved insulation'
30 Years Minimum of 2 layers of approved insulation';top
70-80 mils n/a layer must be an approved cover board'
'May be one layer when using a minimum 1/4:12 tapered polyiso insulation system from GAF over concrete,gypsum or cementious wood fiber(cwf)decks.
'Approved Cover Boards:
1.EnergyGuard—HD Polyiso 5•SECUROCK®Roof Board
2.EnergyGuard-HD Plus Polyiso 6.DensDeck®Prime Roof Board
3.EnergyGuard-NH HD Polyiso 7.DensDeck®Roof Board
4.EnergyGuard—NH HD Plus Polyiso 8.Blue Ridge STRUCTODEK®High Density Fiberboard
Additional Requirements For Extended-Length (25-,30-and 35-Years)EverGuard®Diamond Pledge"NDL Roof Guarantees
Building Height Limitations Buildings greater than 100'(30.5 m)in height must have a minimum 3'(1 m)parapet wall to be eligible for an extended-length
guarantees.
Construction Type ended-length guarantees are available only for new construction or a complete tear-off to the deck.Extended-length guarantees are
not eligible for re-cover applications.
An air/vapor retarder is required where large wall openings greater than 10%of a total wall area can be open during a wind storm,
Air/Vapor Retarders including opening due to storm damage.
All 10'(3 m)wide or greater membranes with side laps mechanical attachment that exceed 6"(152 mm)o.c
WellRoof'M Guarantee Any issued guarantee up to 30 years in length is eligible for a GAF WellRoof-extension;maximum guarantee length,including
Extension WellRoof-Guarantee Extension,is 35 years.
Roof Flashings For extended-length guarantees,separate counter flashing or cap flashing is required;exposed termination bars are not acceptable.
For extended-length guarantees,regardless of the membrane type,EverGuard Extreme®pre-formed flashing accessories are required.
Flashing Accessories When EverGuard Extreme®pre-formed flashing accessories are not available,unreinforced EverGuard Extreme®membrane must be
used.
Roof Edges EverGuard Extreme®Cover Tape HW,EverGuard Extreme®TPO Coated Metal in conjunction with EverGuard Extreme®Flashing Strip
or any of the other EverGuard pre-fabricated extruded aluminum fascia systems are required.
7
GUARANTEE PROGRAM,
PVC SYSTEM GUARANTEE REQUIREMENTS
EVERGUARDO PVC ROOFING SYSTEMS—MECHANICALLY ATTACHED
15-,20-,AND 25-YEAR DIAMOND PLEDGED NDL ROOF GUARANTEE REQUIREMENTS
The following is a summary of the requirements for the installation of an EverGuardO PVC roofing system in order to be eligible to receive an NDL roof guarantee.
The selection of membrane type,thickness,and attachment is the responsibility of the architect,engineer,owner,or roof consultant.GAF EverGuardo roof
membranes must be used in roofing systems to be guaranteed by GAF.
PVC Guarantee Chart
Attachment Maximum Guarantee EverGuardO PVC EverGuardO PVC KEE
Method Length EverGuardO PVC Fleece-back EverGuardO PVC KEE Insulation Requirements
Fleece-back
15 Years 50-80 mils 50-80 mils
Mechanically 20 Years 60-80 mils 60-80 mils As required by Insulation Attachment Table(s)
Attached
25 Years 80 mils 80 mils Minimum of 2 layers of approved insulation'
'May be one layer when using a minimum 1/4:12 tapered polyiso insulation system from GAF over concrete,gypsum or cementious wood fiber(cwf)decks.
Additional Requirements For Extended-Length (25-Year) EverGuardO Diamond Pledge'NDL Roof Guarantees
Building Height Limitations Buildings greater than 100'(30.5 m)in height must have a minimum 3'(1 m)parapet wall to be eligible for an extended-length
guarantees.
Construction Type Extended-length guarantees are available only for new construction or a complete tear-off to the deck.Extended-length guarantees
are not eligible for re-cover applications.
An air/vapor retarder is required where large wall openings greater than 10%of a total wall area can be open during a wind storm,
Air/Vapor Retarders including opening due to storm damage.
All 10' (3 m)wide or greater membranes with side laps mechanical attachment that exceed 6"(150 mm)o.c.
WellRoof-Guarantee Any issued guarantee up to 25 years in length is eligible for a GAF WellRoof-extension;maximum guarantee length,including
. Extension WellRoof-Guarantee Extension,is 30 years.
Roof Flashings For extended-length guarantees,separate counter flashing or cap flashing is required;exposed termination bars are not acceptable.
8
RODFUESIGN CONSIDERATI1
Provides a quick reference of technical requirements for EverGuard® Mechanically
Attached Roofing System designs
•General
•Sustainable Design
•Building Utilization
•Tear-off or Re-cover
•Roof Decks
•Parapet Walls
•Roof Drainage
®Expansion Joints
•Area Dividers
•Equipment Mountings
•Fire Resistance
•Wind Performance
•Energy Efficiency
•Water Vapor Transfer
•Air Barriers
GAF does not practice architecture or engineering.This section is provided for guidance purposes only
based on GAF's experiences in the roofing industry. However,there are many factors that may affect roof
design,including specific job site conditions,local building codes,building use, etc.,which must be taken
into account. GAF recommends consultation with a design professional to determine specific roofing
needs and requirements for each particular project.
9
' l l iF DESIGN CONSIDERATIONS
GENERAL PV(Solar Applications)
Proper roofing tern design and selection requires the • Please review GAF Solar Guidelines,available at www.gaf.com,
p, g sys gbefore installing a PV System on a GAF Guaranteed Roof.
consideration of many factors.Although GAF's expertise is in
materials manufacturing,and not in engineering,architecture,or Internal Temperature/Humidity
specialized roof consulting,we have decades of extensive experience Extremes in internal tern erature/lrumidi
in the practical aspects of roofing. P h'are most often
Our experience su ests that careful consideration of the following associated with cold storage/freezer buildings,swimming pool
g g facilities,dryingg kilns,food processing plants,paper/pulp mills,
will help provide a ndamentally sound basis for design and and smelting/blast furnace facilities.What makes these building
selection of EverGuard°single-ply roofing systems. applications unusual is that the pronounced difference in vapor
pressure between the building interior and the exterior can cause a
SUSTAINABLE DESIGN pronounced vapor flow through the roof assembly.This can result
in a significant build-up of condensation within the roof assembly,
ENERGY STAR®is a joint program of the U.S.Environmental and severe deterioration of both the roof assembly itself and the
Protection Agency and the U.S.Department of Energy.It is structural de&
designed to help our nation save energy and money,and to Relevant dmgn considerations include.
protect the environment through energy-efficient products and
practices.Energy-efficient choices can help building owners —Incorporation of a vapor retarder at deck level to control
save significantly on energy costs and greenhouse gas emissions, vapor flow into and through the roof assembly;
without sacrificing features,style,or comfort.ENERGY STAR®helps _Attention to a vapor-tight seal between the roof and side
consumers,contractors,architects,and property owners make more
knowledgeable,energy-efficient choices. walls/penetrations;
The LEED®(Leadership in Energy and Environmental Design) —Utilization of closed-cell foam insulation and stainless
Green Building Rating System is a voluntary standard for developing steel fasteners to minimize potential for condensation-related
high-performance,energy efficient sustainable buildings.The LEED degradation of the roof system;
Certification System is a program that awards building points for _Limitation of penetrations through the roof deck;
satisfying specified green-building criteria and requirements.
Green Globes®is a web-based program for green building guidance —Avoidance of roof system attachment that will puncture the
and certification that includes an onsite assessment by a third party vapor retarder,
and is an alternative to the LEED°rating system. —Cold/freezer storage.Refer to GAF'sA Guide to Cold Storage
GAF's EverGuard®TPO is the first to be certified by NSF Roof Systems Design,available at www.gaf.com,for further
International for the NSF/ANSI 347 SustainabilityAssessmentfor information.
Single-PI
y Roo ang Membranes.The Standard includes criteria
across the product life cycle from raw material extraction through
manufacturing,use,and end-of-life management.Go to www.nsf. Positive Internal Pressure
org for details. Positive internal pressure is most often associated with
GAF's EverGuard Extreme®TPO Roofing Membrane was engineered manufacturin dean-room facilities,mechanical air-handling
with energy efficiency and sustainability in mind.This high- rooms,aircraa�ttt hangars,distribution centers with multiple
performance,reflective roof membrane is also geared for solar overhead doors,and high-rise office/residential towers.In all these
roof installations.The increasing use of photovoltaics(PV)has instances,positive internal pressures can adversely act on the
highlighted the challenges faced by roofing membranes exposed underside of the roof system.
to concentrated heat,sunlight,and UV.GAF scientists have created Conditions where the positive internal pressure is constant,as in
a grade of TPO single-ply membrane that is built to handle the the case of clean-room facilities and high-rise towers,may cause
extreme demands that can be placed on roofing membranes. the roof system to billow u in a mechanically attached system,i.e.,
EverGuard Extreme°TPO uses proprietary stabilizers and UV form a mattress effect,and may reduce the overall uplift resistance
absorbers to achieve weathering performance far beyond current of the roofing system.
standards. This effect can cause attachment concerns with other types of roof
• EverGuard Extreme®TPO can be installed up to 10 years system.installations including adhered systems.Conditions where
prior to the installation of solar overburden. the positive internal pressure is applied suddenly,as in the case of
aircraft hangars and distribution centers,may cause failure of the
• Installation of overburden will not affect the membrane roofing system due to pressure impact.
performance or warranty/guarantee coverage of EverGuard Relevant design cons derations include.
Extreme TPO.
• Please contact GAF before installing any overburden on —Use of air-impermeable deck construction,such as
the roof. poured-in-place concrete or insulating cellular concrete over a
steel pan;
—Alternatively,installation of an air barrier,such as
BUILDING UTILIZATION polyethylene sheeting,at deck level beneath mechanically
Building utilization can have a significant impact on roofing attached insulation with attachment sufficient to balance
system selection and design.The most common building utilization positive pressure;
considerations are as follows:PV(solar applications),extremes in —Attention to an air-tight seal between roof and side walls/
internal temperature/humidity;positive internal pressure;rooftop penetrations.
traffic/abuse;rooftop-exhausted contaminants;and the use of the
roof as living space.
10
' l l 1 1 1 1
Relevant design considerations include.- TEAR-OFF OR RE-COVER
—Use of air-impermeable deck construction,such as The decision to tear-off or to re-cover an existing roofing system is
poured-in-place concrete or insulating cellular concrete over a not always clear.
steel pan; Although not an exhaustive list,the following additional design
—Alternatively,installation of an air barrier,such as polyethylene elements typically require consideration for any reroofing project:
sheeting,at deck level beneath mechanically attached
insulation with attachment sufficient to balance positive —Replacement of damaged roof decking or structural
pressure; components;
—Attention to an air-tight seal between roof and side walls/ —Improvement of roof access;
penetrations. —Removal of unused rooftop equipment and associated
equipment mountings;
Rooftop Traffic/Physical Abuse —Remounting of rooftop equipment to allow proper roofing and
Roofing installations that can be expected to experience a high flashing technique;
degree of roof traffic due to equipment maintenance,vandalism or —Matching of architectural elements such as special perimeter
other unauthorized access,frequent hailstorms or high winds,and metalwork;
prolonged periods of temperature extremes or rapid fluctuations in —Repair of deteriorated parapet and penthouse walls,
temperature will require a more durable roofing system. —Protection of roofing membrane by means of concrete paver
Relevant design considerations include: overlay or walkway pad system.
—Use of thicker membrane or multiple-ply system;
—Use of a higher compressive strength insulation substrate;
Tear-off/Replace
—Application of a concrete paver or insulated paver overlay Factors that support the tear-off approach include.
for extreme conditions.
—Two or more existing roofs(building code restriction);
Contamination —Structural weight limitation;
Many roofing installations are exposed to oil,grease,and chemical —More than 25%of existing roof area is wet;
contamination in excess of normal airborne contaminants. —Flashing height limitations;
These conditions are most often associated with restaurants,food —Need to maximize long-term performance.
processing plants,chemical and pharmaceutical plants,refineries,
machining and manufacturing facilities,and airports.Most roofing The basis for any tear-off project is to provide a sound substrate for
materials are degraded by certain families of contaminants,and the installation of a new roofing system and minimize potential
will become brittle,swell and soften,or dissolve,depending on the damage from tear-off activities.At a minimum,attention to the
material formulation and contaminant type. following considerations is recommended.
Long-term exposure,i.e.,28-day immersion testing of roofing —Thoroughly inspect decking,flashing substrates,and wood
material and specific contaminant,remains the preferred method nailers before installing new materials;
of determining material resistance.Even then,unforeseen
combinations of contaminants,environmental exposure effects, —Plan a tear-off strategy so that roof drainage patterns are never
and variation in contaminant concentration prevent an absolute blocked,and so that construction traffic is directed away from
prediction of resistance to contamination in all but the most new roof areas;
common situations. —Protect new roof areas adjacent to tear-off areas from dirt,
Relevant design/maintenance considerations include. debris,and damage.
—Isolation of contaminated roof area with expectation of more
frequent roof membrane replacement, Re-cover
—Periodic power washing of roofing membrane with moderate Factors that support the re-cover approach include.-
pressure;
—Limitation of rooftop spillag%xhaust of contaminating —Need to minimize cost;
materials,i.e.,grease traps. —Disposal restrictions;
Refer to www.gaf.com for chemical—resistance information.GAF —Difficult access to the roof;
guarantees on any GAF membrane,including TPO and PVC,do not —Only one roofing system in place.
cover damage due to chemical contamination.
The requirement for any re-cover project is to eliminate defects in
the existing roof assembly so that their effect on the new roofing
system is minimized.At a minimum,attention to the following
considerations is recommended.•
—Raise all perimeter flashings,penetrations,and equipment to
provide required flashing heights;
11
ROOF 1 1 1 'A GNS
—Address drainage deficiencies to provide positive drainage, Pre-cast Concrete Decks
—Remove and replace all wet roofing materials; —These decks are usually manufactured as planks or slabs and
—Concentrate on thorough surface preparation. constructed of steel-reinforced Portland cement and solid
aggregate;often they are made with hollow cores to minimize
their weight.
Re-covering Over Coal Tar Pitch Roofing —All deformed panels must be replaced.
Coal tar pitch has oils and vapors that can be harmful to various —joints must be filled with a masonry grout to correct
roofing membranes and may discolor white thermoplastic imperfections between slabs and feathered to provide a slope not
membranes.Coal tar pitch may also"cold flow"through fastener greater than'/8:12 for adhered insulated assemblies.
holes into the building.For these reasons,GAF does not recommend —If the joints cannot be grouted and finished smooth,then a
re-covering over existing coal tar pitch roofs. leveling course of lightweight insulating concrete(minimum
2" [51 mm]thickness)must be applied.Do not seal joints
ROOF DECKS between the slabs;leave open to permit venting and drying of
the roof fill from below.
It is the responsibility of the engineer,architect building
owner,or roofing contractor to determine the fitness
of a deck for a specific roofing stem installation. Pre-stressed Concrete Decks
Additionally,GAF is not responsible for moisture-related
problems associated with any deck materials. —GAF recommends a minimum 2"(51 mm)cellular lightweight
concrete fill be installed over all pre-stressed concrete decks
Most common structural roof deck types are suitable substrates for prior to installation of the roof system and/or insulation
the installation of an EverGuard®roofing system. because variations in camber and thickness of pre-stressed
concrete members may make securement of the roof system
Structural Steel difficult.
—Min.22 gauge(standard FM-approved steel decking is 22 gauge —Provisions must be made for the curing or drying of the fill
g g pP g g g installed over the top of the pre-stressed deck members.Do not
in thickness). seal joints between the slabs/leave open to permit venting and
—24-26 gauge decks require a GAF Field Services Manager's or drying of the roof fill from below.
Director's approval.Thinner-gauge steel decks usually require
additional mechanical fasteners to achieve comparable roof
attachment performance. Poured Structural Concrete Decks
—18 gauge,20 gauge,and 22 gauge Grade E high-strength steel —Should be properly cured prior to application of the roofing
decks usually require fewer mechanical fasteners to achieve system;twenty-eight(28)days is normally required for proper
comparable roof attachment performance. curing.Check curing agents for compatibility with roofing
materials.Prior to the installation of the roof assemblies,GAF
recommends the evaluation of surface moisture and deck's
Structural Concrete dryness through the use of ASTM D4263 or a hot bitumen test.
—Minimum 2,500 psi(17,237 kPa)compressive strength. —Should be poured over removable forms or must provide for
—Min.2" (51 mm)thickness(pre cast),min.4" (102 mm) bottom side drying.Poured-in-place structural concrete decks
that are poured over non-vented metal decks or pans that
thickness(poured-in-place). remain in place can trap moisture in the deck under the roof
—Cannot be wet or frozen.If the deck is determined to be wet,it system.
must be allowed to dry. —The underside of the concrete decks,either the vented metal
—For insulated decks,wood nailers of equivalent thickness to the forms or exposed concrete,should remain unobstructed to
roof insulation must be provided at perimeters and projection allow the escape of water vapor.Materials that retard the flow
openings to act as an insulation stop and to provide for the of vapor should not be installed directly below the deck.Foil-
nailing of the flanges of metal flashing. faced insulation secured to the bottom of the deck,spray-on
—Ridges and other irregularities require grinding to provide a fireproofing,or paint,which obstruct the venting of the
smooth and even substrate surface. concrete,are just three examples of things that can trap
moisture in the concrete deck below the roof
—For non-insulated decks,nailers must be flush with deck —GAF recommends that a vapor retarder be used directly over any
surfaces. poured structural concrete installed over non-removable form
—When applying insulation directly to the deck in hot asphalt, decks or any impermeable substrate and requires the use of
prime with asphalt/concrete primer,meeting ASTM D41,at a a vapor retarder for lightweight aggregate structural concrete
rate of 1 gal/square(4.08 L/10 ml)and allow the primer to dry decks in this configuration.
prior to the application of the roofing system. —Roofing professionals must take care with lightweight structural
concrete decks The selection of the deck material and its
suitability for use is the responsibility of the designer of record,
who must make appropriate design accommodations to address
high moisture content encountered in lightweight structural
concrete.GAF is not responsible for moisture-related problems
associated with any deck materials.
12
ROOF DESIGN
Wood Planking —Insulation above the wood deck may be necessary to prevent
—Min.1" (25 mm)nominal thickness. condensation from adversely affecting the roof.
—Tongue&groove or splined edges required. —Insulation above the wood deck may be necessary to prevent
—All boards must have a bearing on rafters at each end and be condensation from adversely affecting the deck.
securely fastened. —Must meet minimum pull out values
—Lumber should be kiln dried. —Minimum 5 test pulls per 1,000 sq.ft.(93 sq.m.)
—Check compatibility of preservatives or fire retardants used to —Panels must be installed with a 1/8"to 1/4"(3 mm—6 mm)
treat decking with roofing materials. gap between panels and must match vertically at joints to
within 1/8" (3 mm).
—Decking should be kept dry and roofed promptly after installation. —Moisture content not to exceed 16%
—Decking should be kept dry and roofed promptly after
installation.
Plywood
Note:OSB values vary greatly by manufacturer and with exposure
—Min.15/32" (12 mm)thickness. to moisture.OSB exposed to daily condensation or nightly dew has
—Deck must be attached with approved fasteners at required seen significant loss of pull out values.GAF will not accept any
spacing. liability for substandard or moisture-damaged OSB.
—Plywood sheathing must comply with roof deck design
requirements and local codes for roof deck construction. Gypsum Concrete
—The panels must be secured in accordance with APA- —Min.2" (51 mm)thickness.
The Engineered Wood Association Construction Guide —Steel reinforcing mesh and permanent form boards required for
recommendations.Tongue and groove edges or full blocking poured-in-place monolithic decks.
required.
—Plywood sheathing must be C-D Exposure 1 APA Rated, —Steel-reinforced edges required for pre-cast decking units.
minimum 4 ply. —An average fastener withdrawal resistance as recommended
—Plywood sheathing must comply with Structural 1 performance by the fastener manufacturer must be obtained.If proper
rating. mechanical attachment cannot be achieved,please call 800-
766-3411 for assistance with installation recommendations.
—Panels must be installed with a 1/8"to 1/4" (3 mm—6 mm) —If surface is either wet or frozen,a poured gypsum deck is not
gap between panels and must match vertically at joints to
suitable to receive a roof.
within 1/8" (3 mm).
—Moisture content not to exceed 16%
—Decking should be kept dry and roofed promptly after Cementitious Wood Fiber
installation. —Min.2"(51 mm)thickness.
—Must be installed over joists not greater than 24" (610 mm) —Tongue and groove panel edges required.
O.C. —Should not be installed over high humidity occupancies.
—Insulation above the wood deck may be necessary to prevent —All structural wood fiber deck panels must be anchored against
condensation from adversely affecting the deck uplift and lateral movement.
—Must meet minimum pull out values
—Minimum 5 test pulls per 1,000 sq.ft.(93 sq.m.) lightweight Insulating Concrete(LWIC)
—Min.2" (51 mm)thickness.
Oriented Strand Board(OSB) —Cellular lightweight insulating concrete decks can be installed
—Min.15/32" (12 mm)thickness. over non-slotted,galvanized metal decking designed for cellular
—Deck must be attached with approved fasteners at required lightweight insulating concrete or structural concrete.
spacing.Consult local building codes for specific requirements. —Aggregate lightweight insulating concrete decks must be
—OSB must comply with roof deck design requirements and local installed over permanent venting steel forms.
codes for roof deck construction. —Insulating concrete installed over structural concrete or
—The panels must be secured in accordance with APA- existing roof membrane substrates requires a GAF Field
p Services Manager's or Director's approval.
The Engineered Wood Association Construction Guide
recommendations.Tongue and groove edges or full blocking —Lightweight insulating concrete decks are required to have a
required. minimum compressive strength of 125 psi(9 kg/cm)and a
density of 22 pcf(208 grams/cubic meter).Individual deck
—OSB must comply with Structural 1 performance rating. manufacturers'standards apply when their specifications exceed
—Oriented strand board(OSB)must be C-D Exposure 1 APA these GAF minimum thicknesses,compressive strengths,and
Rated. density requirements.
—Must be installed over joists not greater than 24" (610 mm)
O.C.
13
ROOF DESIGN CONSIDERATIONS
—Where the Mean January Temperature(reference current Plywood/Oriented Strand Board(OSB)
ASHRAE Fundamentals Handbook)is below 40OF(4.40C), —Plywood must be exterior grade,minimum 4 ply,and at least
lightweight insulating concrete decks must be poured and 15/32' (12 mm)thi&
roofed between April 1st and October 31st;this type of deck is
unacceptable in Alaska. —OSB must comply with Structural 1 rating and be at least 716'
—lightweight insulating concrete should not be poured during (11 mm)thick.
rainy periods;deck areas that have frozen before they have —Tongue and groove edges.
cured must be removed and replaced.Check decks for moisture —Adhesives should only be used with untreated plywood/OSB.
content and dryness if exposed to precipitation prior to
installation of roof membrane. —Surface of plywood/OSB should be dry to the touch with no
visible liquid,snow or ice at the time roofing is installed.
Loadmaster Decks —Moisture content not to exceed 16%.
—Roof deck must be installed by a Loadmaster-approved
contractor according to Loadmaster specifications. Sheet Metal
—Min.25 gauge steel decking,15/1c"(22 mm)deep with'/z"(13 —Min.24 gauge steel.
mm)thick mineral board top panel. —Min..032" (8 mm)aluminum.
—Polystyrene or polyisocyanurate insulation is optional. —Corrugated panels require overlay of 15/32" (12 mm)plywood/
—Install only white or light colored membranes on Loadmaster oriented strand board or silicone-impregnated gypsum panel.
Decks.
—Consult a GAF Field Services Manager or Director for reroofing Gypsum Panel
and re-covering requirements.
—Min.'/z" (13 rum)thickness.
Non-Acceptable Substrates —Underlying substrate must allow securement of flashing at
prescribed spacing.Mechanical attachment to gypsum panels
Note:The following are some examples of non-acceptable roof is not acceptable.
substrates,but should not be considered a complete list.Please —Use of gypsum panel requires GAF Field Services Area Manager's
call 800-766-3411 or consult with a GAF Field Services Manager or or Director's approval.
Director regarding the suitability of unusual deck substrates.
—Metal roof panels,unless secured to structural purlins
—Transite roof panels ROOF DRAINAGE
—Fiberglass roof panels Providing positive roof drainage is important.Standing water
can result in deck deflection and possible structural damage.
In addition,in the event of an opening through the roofing
PARAPET WAIlS membrane,standing water can significantly worsen damage to the
roof system,the building itself,and interior contents by providing
Most common structural wall types are suitable substrates for the a reservoir of water ready to gravitate through the membrane
installation of EverGuard®membrane flashing. opening.Providing structural slope in the deck assembly,installing
a tapered lightweight cellular concrete overlay,installing a tapered
insulation system,or adding additional drains are the most
Brick/Block Masonry common methods of achieving positive drainage.
—Standard-finish brick and concrete block with standard tooled National building codes generally require a minimum'/a:12 slope
mortar joints. to drain in order to provide positive drainage and accommodate
—Split-face block,textured block and brick,and deeply tooled deck irregularities.Although existing buildings may or may not
mortar joints require a cementitious coating or plywood facing be required by code to achieve this degree of roof slope,providing
to provide a smooth and even substrate surface. positive slope to drain remains an important design consideration.
In situations where roof edge conditions,window/door height above
the roof surface,parapet wall height,weep hole locations,rooftop
Structural Concrete equipment mountings,or other factors prevent the installation of
—Steel trowel,wood float,or removable form finish. a full slope-to-drain system,a combination of additional drain
locations,tapered saddles,and crickets to direct drainage to drain
—Ridges and other irregularities require grinding to provide a points should be considered.
smooth and even substrate surface.
Design and installation of roof drainage systems should comply
with the International Energy Conservation Code(IECC)and the
Stucco/EIFS International Plumbing Code(IPC).
—Stucco finish and EIFS systems must be removed to the
underlying substrate surface.
14
RGGF DESIGN CONI1 'A 1
EXPANSION JOINTS WIND PERFORMANCE_
The function of a structural expansion joint is to minimize the Ideally,roofing systems should be capable of resisting the forces
effect of stresses and movements on building components and to generated by the maximum anticipated wind speed for a specific
prevent these stresses from adversely affecting the roof.The design, building.One widely accepted method for specifying wind
location,and use of building structural expansion joints must performance is to require the appropriate FM 1-60,1-90,or other
be considered at the time of original building design and are the rated system as appropriate for a specific building based upon
responsibility of the architect,engineer,and building owner. location and exposure.
Expansion Joints: The following are common references and approvals typically used
—Must be continuous along the break in the structure and not in conjunction with the wind performance of EverGuard®roofing
terminated short of the end of the roof deck. systems'
—Should never be bridged with insulation. ®Factory Mutual Approvals
—Construction ties must be removed in order for expansion joints —Testing based on methods described in Approval Standards
to function properly. 4450 and 4470.
—Extend expansion joints at least 8" (203 mm)above the roof —Measures resistance to upward pressure applied to the
surface on curbs and use either EverGuard°Prefabricated roof system.
Expansion Joint Covers or metal expansion joint covers. —Factory Mutual Loss Prevention Data Sheets 1-28 and 1-29
Alternately,a low-profile expansion joint can be used;see provide specific installation guidelines.
EverGuard®details for construction. •DORA(Directory Of Roofing Assemblies)
—Design drainage flow patterns so they are not blocked by any The Directory of Roof Assemblies(DORA)is a web application
structural expansion joints. database of roof systems tested in accordance with standards
—Where possible,position walkways on roof access points to limit referenced in Chapter 15 of the International Building Code
roof traffic over expansion joints;provide protective coverings (IBC).This service lists wind uplift load capacity on single ply
for expansion joints at locations of anticipated roof traffic. and modified bitumen roof systems.
—All expansion joints should have wood nailers. —Listed in MasterSpec
—EverGuard®Pre-Fab Expansion Joint Covers are available. —Sponsored by SPRI and administered by InterTek
—Available at https://www.dora-directory.com/
AREA DIVIDERS ®American Society of Civil Engineers (ASCE)document
ASCE 7,"Minimum Design Loads for Buildings and
Area dividers are not structural expansion joints.They can Other Structures"
be installed to separate different roofing systems and can be —A comprehensive analysis of wind forces acting on buildings.
either a curb or low-profile type.Please call 800-766-3411 for
recommendations regarding area dividers. —Requires detailed calculations to determine actual wind
pressures at different regions of the roof.
EQUIPMENT MOUNTINGS —Referenced by building codes.Check with local code agency
as to the latest version that has been adopted.
Proper mounting of equipment is an important consideration.In
general,rooftop equipment should be mounted in such a way as
to provide adequate flashing height for both new and anticipated GAF provides the following thermoplastic Perimeter Half Sheet Table
re-cover roof system applications;sufficient clearance around and to use as a guide for mechanically attached systems because wind
beneath the equipment to facilitate roof system installation;and pressures are increased in the corners and perimeter areas of the
compatibility with roofing and flashing materials so that standard roof.The field area of the roof normally experiences significantly
flashing methods can be readily applied. lower wind pressures than either the corner or perimeter areas.
Alternatively,lightweight equipment and gas/conduit lines can be
installed on wood blocking or other prefabricated devices that do not
penetrate the roofing system.Do NOT use this type of application for
heavy equipment or heavy gas/conduit lines,or where movement
can damage the substrate or membrane.
FIRE RESISTANCE
Resistance by the roofing system to fire applied to the exterior roof
surface is important.Typically,an ANSI/UL 790 or ASTM-E108 Class
A,B or C roof fire rating is required by building code.Occasionally,
depending on the use of the building,special resistance to fire
applied from within the building is required.This is normally
expressed in the form of hourly ratings,and usually requires the use
of a specialized roof assembly.Refer to current EverGuard®listings
in the appropriate UL directory or Factory Mutual Approval Listing
to verify roof assembly requirements for specific fire ratings.
15
ROOF OESIGN CONSIDERATUOUS
Perimeter Half Sheet Table •R-Value
—Thermal Resistance:The number of degrees difference between
Number of Number of Number of two surfaces(energy difference)that is required to obtain an
Building Building EverGuard® EverGuard® EverGuard® energy flow of 1 BTU through a 1-square-foot(0.0929 sq m)
TPO 60" PVC 60" TPO 72" sample of a given material thickness in one hour.
Width Height (1.5 m) (1.5 m) (1.83 m) —The R-value is the reciprocal of the C-value.The C-value
Half Sheets Half Sheets Half Sheets represents thermal conductance and depends on the thickness
of the material.
0-34' 1 1 1
(0-10 m) —Thermal Resistance applies to an actual thickness of a material,
and as such is a quantitative physical property that can be used
<200' 35-100' 2 2 2 for determining insulation requirements.
(61 m) (10-30 m)
>100' Formula Calulations:Install half sheet throughout the •Reflectance
(30 m) perimeter and comer region.The width of this region is defined
as the least of the following two measurements:0.1 x building —A measure of the%of solar energy that is reflected away from
>_200' width or 0.4 x building height a surface.
(61 m) any height Note:The minimum perimeter width is 4'(1.2 m).The width is —Dark materials absorb more heat from the sun and can be up
defined as the narrowest dimension. to 70°F(210C)hotter than a reflective white surface given the
same outside temperature and conditions such as wind speed,
location,etc.
The perimeter area,as defined in the above table,may be adhered •Emittance
as an alternative to using half sheets.When adhering the perimeter
area,the number of insulation fasteners must be increased in —A measure of the infrared radiation emitted from a roof surface.
these areas;refer to the insulation attachment section for adhered Unlike reflectance,infrared emissivity may not be affected by
membranes to determine the proper insulation attachment dirt or discoloration of the surface of a material.
pattern.In all cases where the perimeter area is adhered,the
membrane must be mechanically fastened where the perimeter The following references provide useful information regarding
area(the adhered area)meets the field roof area.This attachment energy efficiency:
will prevent pooling of the adhered perimeter area.Refer to the
sheet lay-up details in the mechanically attached system section •ASHRAE Fundamentals Handbook
for requirements on the installation of these half sheets.Note: —Provides detailed design calculations and material energy
When designing for wind loads,ensure that the proper building transfer information utilized by mechanical engineers in the
classification(closed,partially closed,or open)is used if the design of heating,ventilation,and air-conditioning systems.
building has large openings(i.e.,docks with large loading bays,
etc.).Improper classifications can result in roof attachment failure —Suitable for complex energy evaluation considerations such as
caused by designing to lower loads than actually exist for the solar heat gain,exterior shading,total building envelope,
building in question.Factory Mutual Approvals attachment requires building usage,and lighting.
the formula calculations.
Important Note:Most states/jurisdictions have not adopted ASCE ®NRCA Roofing Manual:Architectural Metal Flashing
7-16.If you are in an area that requires ASCE 7-16,please contact Condensation and Air Leakage Control,and reroofing
GAF for assistance.
—Provides a simplified method for determining the amount of
insulation necessary to construct an energy-efficient low-slope
ENERGY EFFICIENCY roof system.
Thermal transmission standards have been established by building —Provides a simplified method for determining the energy
codes for most buildings.Roof insulation installed above the cost savings resulting from the installation c additional
roof deck is a practical means of achieving the necessary energy roof insulation.
efficiencies.In addition,the use of white-colored reflective —Suitable for most roofing-related energy evaluations.
membranes can reduce the heat load on air conditioning
equipment,as well as provide a moderating effect on the
temperature in proximity to the building. •The NRCA Energy Wise Roof Calculator
—Provides a simplified method for determining the amount of
•U-Value insulation necessary to construct an energy-efficient low-slope
roof system.
—Thermal Transmittance:The number of BTUs(energy) —Provides a simplified method for determining the energy
that pass through a assembly
inI-squar one
our with
sq.m.)sample of cost savings resulting from the installation of additional
a total material assembly in one hour with a temperature roof insulation.
difference between the two surfaces of 1 F(/9 Q.
—Thermal Transmittance applies to an actual total material —Suitable for most roofing-related energy evaluations.
assembly,and as such is a quantitative physical property —Go to www.enerpvise.arca.net
that can be used to represent the overall thermal performance
of a system.
16
ROOF DESIGnt-ONSIDERATIONS
•DOE Energy Calculator A number of basic considerations factor into determining
—Go to www.orni.gov/scVroofs+walls/facts/CoolCalcEnergy.htm the need and location of a vapor retarder:
to find the Cool Roof Calculator. •Temperature and Relative Humidity
—This tool measures the energy savings for low-slope roofs with —Vapor flows based upon a difference in vapor pressure between
non-black roof surfaces. two locations,and flows from higher to lower pressure regions.
—Normally,the higher the temperature,the higher the vapor
•GAF CREST pressure.
—GAF CREST(Cool Roof Energy and Sustainability Tool)is —In determining the need for a vapor retarder for most typical
a unique tool designed to help contractors consultants and conditions,the exterior winter temperature and the interior
building owners compare the energy cost savings of different winter relative humidity are the most critical factors.
roofing systems options. —Temperature information is readily available from the National
Weather Service.
WATER VAPOR TRANSFER —Relative humidity information is typically available from the
building HVAC design professional or the building operations
Typical single-ply roof assemblies do not include vapor retarders manager.Relative humidity can also be field-measured.
as a standard assembly component.For these applications,there is
a natural transfer of water vapor into the roof assembly during a
portion of the year,followed by a natural transfer of water vapor out •Vapor Retarder Location
of the roof assembly during the balance of the year.Under normal —Vapor retarders are intended to be installed as close to the
conditions,this type of cyclical water vapor flow does not cause warm side of the roof assembly as possible.Normally,this
a significant deterioration of the roof insulation or reduction in places the vapor retarder directlyon the structural deck or
insulation thermal performance. directly over a minimal la er of insulation.Note:The vapor
retarder is not part of the GAF roofing system and is
For projects where there is a significant difference in vapor pressure not covered by GAF warranties or guarantees.
between building interior and exterior,the volume of water vapor
flow is much greater,and control of water vapor transfer into —A sufficient amount of insulation must be installed over the
and through a roof system becomes an important consideration. vapor retarder to place the dew point location above the level of
Without adequate control provisions such as a vapor retarder, the vapor retarder(keeping it on the warm side).
the roof insulation can become saturated with water,with a —Determining the need and location of the vapor retarder is the
corresponding reduction in insulation thermal performance. responsibility of the design professional.
Structural deck damage and/or condensation into the building
interior may also occur.
Vapor flow is referenced in various ways.The following are common 'Sealing At Perimeter And Penetrations
terminologies: —Vapor retarders must be completely sealed at all perimeter and
penetration locations.
•Permeance —Sealing methods must be selected in accordance with the type
—The time rate of vapor transmission thromh a flat material or of vapor retarder being installed.
construction induced by vapor pressure difference between two —All'leakage into the roof system at perimeters and penetrations
specific surfaces,under specified temperature and humidity will significantly reduce the effectiveness of the vapor retarder
conditions. by allowingense and cause roof deterioration.moist air to penetrate into the roof assembly,where
—Units of permeance are expressed as:(gr)/(h) (sq.ft.) (in.Hg). it can cond
—The permeance,or perm rating,of a material is a performance
evaluation specific to a sample of material,and not a specific 'Building Usage
property of the material. —Building usage such as swimming pools,food processing,paper
—In general,the perm rating of a vapor retarder should be<0.1 manufacturing,foundries,etc.,that result in increased internal
perms(Class 1). temperatures and humidity conditions will likely require the
use of a vapor retarder.
•Relative Humidity —These generalizations are not intended to substitute for actual
ty vapor Clow calculations based upon specific building and
—Relative humidity is the ratio of the pressure of water vapor climatic conditions.
present in air to the pressure of fully saturated water vapor at
the same temperature.
—Relative humidity is expressed as a percentage. The Case For The Use Of A Vapor Retarder
—A vapor retarder can protect the long-term thermal resistance
of insulation sandwiched between the vapor retarder and the
•Dew Point Temperature membrane.
—The temperature at which air becomes saturated with —A vapor retarder provides a good safeguard against vapor
saturated vapor(100%relative humidity)and condensation migration in case a building's use changes from a"dry"use to
begins to form. a"wet"use.
—Dew Point Temperature is expressed as OF or°C. —A vapor retarder can reduce or eliminate condensation inside
the roofing system.
17
ROOF DESIGN CONSIDERATIONS
•The Case Against The Use Of A Vapor Retarder
—The vapor retarder,together with the roofing membrane,
may seal within the roof system entrapped moisture that can
eventually destroy the insulation,help split or wrinkle the
membrane,or,in gaseous form,blister it.
—In the event of a roof leak through the membrane,the vapor
retarder will trap the water in the insulation and only appear
as a leak when there is a disruption in the vapor retarder.A
large area of insulation may be saturated before the punctured
roof membrane is discovered and repaired.
—A vapor retarder is a disadvantage in the summer,when vapor
migration is generally downward through the roof.Hot,humid
air can infiltrate the roofing system through any interruption in
the membrane and moisture can condense and then collect on
the vapor retarder.
The following resources may provide useful information regarding
vapor retarders:
—NRCA Guidelines for Condensation and Air Leakage Control
—ASHRAE Fundamentals Handbook
AIR BARRIERS
1.Designers should consider requiring an air barrier:
a.On all air porous decks,with openings in the walls or
area directly below the roof deck that exceeds 10%of the
total wall area.
b.When the internal pressurization of the building is in
excess of 5 lbs.per sq.ft. (239 Pa).
c.When the building height exceeds 50 ft. (30.5 m).
d.When buildings have large openings or overhangs.
e.In conditions where positive internal pressure is applied
suddenly,as may be the case at aircraft hangers or
distribution centers,where the roofing system may fail
due to pressure impact.
2.Refer to FM Global Loss Prevention Data Sheets 1-28 and
1-29 for specific installation procedures for all roofs with
large openings.
3.For roofs to be guaranteed by GAF:
a.Air barriers are required for all extended-length guarantees
on buildings where large wall openings greater than 10%
of the total wall area can be opened during a windstorm,
including opening due to storm damage.
b.All 10'(3 m)wide or greater membranes with side laps
mechanically attached with a spacing greater than 6,,(152
mm)O.C.
18
TPO DESIGN TABLE -NEW CONSTRUCTION OR TEAR-OFF -MECHANICALLY ATTACHED
Insulation/Substrate Insulation/Slip Sheet Membrane Type
Attachment
Deck
Gypsum Wood Fiber/ 3/6 oz VersaShield® Fleece
Mech.Fast. Adhesive/LRF ISO Board Perlite EPS/XPS Fanfold` (85/170 g) Sold" None Smooth (FB)
Polymat
Yes Yes2 Yes Yes Yes Yes Yes
Steel
Yes Yes2 Yes Yes Yes Yes Yes
Wood
Yes Yes2 Yes Yes Yes Yes Yes Yes Yes Yes
,
Yes Yes2 Yes Yes Yes Yes Yes Yes Yes Yes
Structural Concrete Yes Yes2 Yes Yes Yes Yes Yes Yes Yes
&Gypsum 2
Yes Yes Yes Yes Yes Yes Yes Yes Yes
Lightweight Yes Yes2 Yes Yes Yes Yes Yes
Insulating Concrete Yes Yes2 Yes Yes Yes Yes Yes
Cementitious Wood Yes Yes2 Yes Yes Yes Yes Yes Yes Yes
Fiber
Yes . Yes2 Yes Yes Yes Yes Yes Yes Yes
'Fanfold to be used as a separator board only.
2 Low rise foam or hot asphalt can be used for cricket and saddle attachment.If specification requires insulation to be adhered in a mechanically attached system,use foam adhesive designed for
insulation attachment,or hot asphalt.
70 DESIGN TABLE -RE-COVER-MECHANICALLY ATTACHED
Insulation/Substrate
Attachment Insulation/Substrate Membrane Type
Existing Roofing
System Type Gypsum Wood Fiber/ 3/6 oz VersaShield® Fleece
Mech.Fast. Adhesive/LRF ISO Board Perlite' EPS/XPS Fanfold3 (P ) Solo' None Smooth (FB)
olyma
Smooth Yes Yes' Yes Yes Yes Yes Yes Yes Yes Yes
BUR/IB Yes Yes Yes Yes Yes Yes Yes Yes Yes
Single-Ply Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes? Yes
Membrane Yes Yes' Yes Yes -,Yes Yes Yes Yes Yes
Granule-Surfaced Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
c BU"IB Yes .Yes4 Yes Yes Yes Yes Yes Yes Yes ;
Gravel-Surfaced Yes Yes4 Yes Yes Yes Yes Yes Yes
BUR/MBS Yes Yes4 Yes Yes Yes Yes Yes Yes
Yes Yes4 Yes Yes Yes Yee Yes
Standing Seam Meta16
Yes .Yes'..., Yes Yes Yes Yesz Yes.
' Roof moisture scan required for use of perlite/wood fiber in re-cover roofing systems.
z.An approved cover board is required when XPS Is used as flute fill material.
3.Fanfold to be used as a re-cover board only.
4.Low rise foam or hot asphalt can be used for cricket and saddle attachment.If specification requires insulation to be adhered in a mechanically attached system,use foam adhesive designed for
insulation attachment,or hot asphalt.
s.All loose gravel must be removed.
6.When recovering over an existing standing seam metal roof,fasteners must be directly installed into structural purlins with appropriate fastener type.Fastening into the panel in not permitted.
'.Existing single-ply membrane must be clean,smooth,dry and free of debris.
PVC DESIGN TABLE-NEW CONSTRUCTION OR TEAR OFF-MECHANICALLY ATTACHED
Insulation/Substrate
Attachment Insulation/Slip Sheet Membrane Type
Deck 3/6 oz.
Mech Fast. Adhesive/LRF ISO Gypsum Wood Fiber/ EPS/XI'S Fanfoldz (85/170 g) Fleece
Board Perlite Solo'"VersaShield® None Smooth (�)
Polymat
Yes Yes Yes Yes Yes Yes' Yes Yes
Steel
Yes .. Yes4. Yes Yes, Yes. Yes Yes
Yes Yes Yes Yes Yes Yes' Yes' Yes Yes Yes
Wood
Yes Yes4 Yes Yes Yes Yes Yes Yes Yes Yes
i Structural Concrete Yes Yes Yes Yes Yes Yes' Yes' Yes Yes
&Gypsum Yes Yes4 Yes Yes Yes Yes Yes Yes Yes
Lightweight Yes Yes Yes Yes' Yes' Yes Yes
Insulating Concrete Yes Yes4 Yes - Yes Yes Yes 'Yes
Cementitious Wood Yes Yes Yes Yes Yes Yes' Yes' Yes Yes
Fiber Yes Yes4 Yes Yes Yes Yes Yes Yes Yes -
'XPS/Fanfold in combination with a 3/6 oz.(85/170 g)polymat separator.
a.Fanfold to be used as a separator board only.
3.Low rise foam or hot asphalt can be used for cricket and saddle attachment.If specification requires insulation to be adhered in a mechanically attached system,use foam adhesive designed for
insulation attachment,or hot asphalt.
PVC DESIGN TABLE - RE-COVER-MECHANICALLY ATTACHED
Insulation/Substrate Insulation/Slip Sheet Membrane Type
Attachment
Existing Roofing
a 3/6 oz.
System y � Gypsum Wood Fiber/ a VersaShield® Fleece
Mech Fast. Adhesive/LRF ISO Board Perlite' EPS/XPS Fanfold (85/170 g) Sold" None Smooth (FB)
Polymat
Smooth Yes Yes5 Yes Yes Yes Yes3 Yes3 Yes Yes Yes
BUR/MB Yes Yes5 Yes Yes Yes Yes Yes Yes Yes
Single-Ply Yes Yes5 Yes Yes Yes Yes3 Yes3 Yes Yes Yes
Membrane Yes yes Yes Yes Yes Yes Yes Yes Yes
Granule-Surfaced Yes Yes5 Yes Yes Yes Yes3 Yes3 Yes Yes
N - .
BUR/MB Yes Yes' Yes 'Yes Yes Yes Yes Yes Yes
Gravel-Surfaced Yes Yes5 Yes Yes Yes Yes3 Yes3 Yes
BUR/MB6 Yes Yes5 Yes . Yes Yes Yes Yes Yes
Yes YeS5 Yes Yes Yes Yes3 Yes3 Yes
Standing Seam Met
Yes YeS5 Yes Yes Yes Yes Yes
' Roof moisture scan required for use of perlite/wood fiber in re-cover roofing systems.
An approved cover board is required when XPS is used as flute fill material.
3•XPS/Fanfold in combination with a 3/6 oz.(85/170 g)polymat separator.
`Fanfold to be used as an separator board only.
5.Low rise foam or hot asphalt can be used for cricket and saddle attachment.If specification requires insulation to be adhered in a mechanically attached system,use foam adhesive designed for insulation
attachment,or hot asphalt.A polymat must be used to cover any asphalt bleed out when a smooth PVC membrane is used.
6.All loose gravel must be removed.
INSULATION FASTENER&PLATE TABLE FOR MECHANICALLY ATTACHED SYSTEMS(TABLE 1 OF 2)
For insulation attachment attachment use Table 1 to determine the number of fasteners per board and Table 2 to determine the
proper fastener and plate.
Number of Fasteners per Board
Insulation Type Board Size Thickness
Field Perimeter Corner
4'x4' Any 4 4 4
(1.2mx2.4m)
Pol 'so 4'x8' W'4.2" 6 6 6
(1.2mx2.4m) (13-30mm)
4'x8' >_1.3" 5 5 5
(1.2 m x 2.4 m) (33 mm)
4'x4'
Perlite (1.2 m x 2.4 m) Any 4 4 4
4'x4' Any 4 4 4
(1.2mx2.4m)
Wood Fiber
4'x8' Any 6 6 6
(1.2mx2.4m)
4'x4' Any 4 4 4
(1.2mx2.4m)
Extruded Polystyrene' 4'x8' W"4.2" 6 6 6
(1.2mx2.4m) (13-30mm)
4'x8' >1.3" 5 5 5
(1.2mx2.4m) (33mm)
4'x4' Any 4 4 4
(1.2mx2.4m)
Expanded Polystyrene' 4'x8' 'h"4.2" 6 6 6
(1.2mx2.4m) (13-30mm)
4'x8' >1.3" 5 5 5
(1.2mx2.4m) (33mm)
Fanfold
(TPO or PVC Fanfold' 3/8 m )
(10 mm 2-1-2-1-2 2-1-2-1-2 2-1-2-1-2
Fleece-back only)
Gypsum Board' 4'x8' 1/4"-5/8" 6 6 6
(1.2mx2.4m) (6-16mm)
'Smooth PVC must have a 3/6 oz.(85/170 gr)polymat separator sheet.Fleece-back PVC is acceptable.
2 Fanfold attachment spacing is for each 2'x 4' (610 rum x 1.2 m)section.
3Includes approved DensDeck®and SECUROCK®roof board products.
23
INSULATION FASTENER&PLATE TABLE FOR MECHANICALLY ATTACHED SYSTEMS(TABLE 2 OF 2)
Deck Type Fastener Type Plate Type Penetration(min.)
Drill-Tec'"#12 Fastener
steel, Drill=1ec�'3 (76 mm)steel Plate 3/4"(19 rum)
gauge) through the deck
Drill-'Ikc'"#14 Fastener
Drill-Tec'"#12 Fastener
Wood 1"(25 mm)thread
(Plywood,OSB and Plank) Drill-Tec'"#14 Fastener Drill-Tec'"3"(76 mm)Steel Plate into/through the deck
Drill-Tec—HXD#15 Fastener
Drill-Tec'"CD-10 Fastener Drill-Tec-3"(76 min)Steel Plate 1 (25 mm)shank
into the deck
Structural Concrete
Drill-Tec—#14 Fastener Drill-Tec'"3"(76 mm)Steel Plate 1"(25 mm)thread
into the deck
Drill-Tec—#12 Fastener
Lightweight Insulating 3/4"(19 mm)thread
Concrete(LWIC) Drill-Tec'"#14 Fastener Drill-Tec'"3"(76 mm)Steel Plate through steel form
Drill-Tec'"M#15 Fastener
Drill-Tec'"Polymer Drill-Tec'"3"(76 mm)GypTecTM Plate
Gypsum Concrete and GypTec"'Fastener 11/2"(38 mm)
Cementitious Wood Fiber
thread into the deck
(rectum)
Drill-Tec'"LD Fastener Drill-Tec'"3"(76 mm)LD Plate
'24-26 gauge decks require a GAF Field Services Manager's or Director's approval.GAF does not approve the use of metal panels as a roof deck.
24
10-(3.05 M)WIDE WO&PVC MEMBRANE ATTACHMENT TABLE -MECHANICALLY ATTACHED SYSTEMS
Deck Type Minimum Fastener Plate Penetration Standard 90 psf'
Pull-out Values(lbs) Type Pattern Pattern
2 3/8" (61 mm)
barbed XHD
450 Drill-Tec-XHD Drill-Tec—Eye Hook® 3/4" (19 mm) 12" (305 mm) 6" (152 mm)
Steel (#15) AccuSeam°Plate through the deck O.C. O.C.
22 ga. 2 3/4" (70 mm)
standard barbed SXHD
(33 ksi) 2 3/8" (61 mm)
Drill-Tec-HD barbed XHD 3/4" (19 mm) 6" (152 mm)
350 (#14) Drill-Tec'"Eye Hook" through the deck O.C.
AccuSeam°Plate
Steel 750 Drill-Tec—SXHD 2 3/4" (70 mm) 3/4"(19 mm) 12"(305 mm) 12" (305 mm)
22 ga high (#21) barbed SXHD through the deck O.C. O.C.
strength Drill-Tec—XHD 2 3/4" (70 mm) 3/4" (19 mm) 12" (305 mm) 6" (152 mm)
(80 ksi) 450 (#15) barbed SXHD through the deck O.C. O.C.
2 3/8" (61 mm)
barbed XHD
Drill-Tec—XHD Drill-Tec-Eye Hook® 3/4" (19 mm) 6" (152 mm)
(#15) AccuSeam®Plate through the deck O.C.
Steel 2 3/4" (70 mm)
24 ga. 350 barbed SXHD
standard'
2 3/8" (61 mm)
Drill-Tec—HD barbed XHD 3/4" (19 mm) 6" (152 mm)
(#14) Drill-Tec—Eye Hook® through the deck O.C.
AccuSeam®Plate
2 3/8" (61 mm)
Drill-Tec—HD barbed XHD
(#14) Drill-Tec—Eye Hook®
2" (51 mm) AccuSeam®Plate 1" (25 mm) 12" (305 mm) 6" (152 mm)
Nominal 800 into the deck O.C. O.C.
Wood Plank 2 3/8' (61 mm)
Drill-Tec—XHD barbed XHD
(#15) Drill-Tec—Eye Hook®
AccuSeam®Plate
Drill-Tec—HD 2 3/8" (61 mm)
1" (25 mm) (#14) barbed XHD 1" (25 mm) 9" (229 mm)
Nominal 450 through the deck O.C.
Wood Plank Drill-Tec—XHD Drill-Tec—Eye Hook®
(#15) AccuSeam®Plate
'90 psf is attachment pattern to provide 901bf/ft2(5.3 k Pa)of uplift pressure resistance and may equate to FM I-90.
Refer to current FM Approval Guide.
2 Does not include metal roofing panels.
Note:For designing at elevated uplift pressures,please consult the current FM Approval Guide/ROOFNAV.
25
10(3.05 M)WIDE TPO&PVC MEMBRANE ATTACHMENT TABLE-MECHANICALLY ATTACHED SYSTEMS(CONY.)
Deck Type Minimum Fastener Plate Penetration Standard 90 psf
Pull-out Values(lbs) Type Pattern Pattern
2 3/8" (61 mm)
Drill-Tec—HD barbed XHD
(#14) Drill-Tec—Eye Hook®
3/4" (19 mm) 525 AccuSeam®Plate 1"(25 mm) 12"(3o5 mm) 6" (152 mm)
Nominal Plywood 2 3/8" (61-mm) through the deck O.C. O.C.
Drill-Tec—XHD barbed XHD
(#15) Drill-Tec—Eye Hook°
AccuSeam®Plate
2 3/8" (61 mm)
15/32" (12 mm) 350 Drill-Tec—HD barbed XHD 1" (25 mm) 6" (152 mm)
Plywood or OSB (#14) Drill-Tec—Eye Hook° through the deck O.C.
AccuSeam°Plate
2 3/8" (61 mm)
Drill-Tec-HD barbed HD 1" (25 mm) 12" (305 mm) 6" (152 mm)
700 (#14) Drill-Tec-Eye Hook® into the deck O.C. O.C.
AccuSeam®Plate
Structural 2 3/8"(61 mm)
Concrete barbed HD 6" (152 mm)
Drill-Tec—Eye Hook° 1"(25 mm) 12"(305 mm) O.C.
900 Drill-Tec" Spike AccuSeam®Plate into the deck O.C.
2 3/4"(70 mm) 12" (305 mm)
barbed SXHD O.C.
2 3/8" (61 mm)
Drill-Tec-XHD barbed XHD 3/4" (19 mm) 12" (305 mm) 6" (152 mm)
450 Dri Lightweight (#15) Drill-Tec'"Eye Hook® through the form O.C. O.C.
Insulating AccuSeam®Plate
Concrete,
22 ga. 2 3/8"(61 mm)
standard form 350 Drill-Tec—HD barbed XHD 3/4"(19 mm) 6" (152 mm)
(#14) Drill-Tec—Eye Hook° through the form O.C.
AccuSeam®Plate
2 3/8" (61 nun)
Drill-Tec—XHD barbed XHD
Lightweight (#15) Drill-Tec-Eye Hook°
Insulating AccuSeam®Plate
3/4"(19 mm) 6" (152 mm)
Concrete, 350
24 ga. 2 3/8" (61 mm) through the form O.C.
standard form Drill-Tec""HD barbed XHD
(#14) Drill-Tec—Eye Hook®
AccuSeam°Plate
Gypsum Concrete 400 Drill-Tec— GYPTEC—2"(51 mm) 1 1/2" (38 mm) 9" (229 mm) 6"(152 mm)
Polymer barbed into the deck O.C. O.C.
Cementitious Drill-Tec— Drill-Tec'-Eye Hook® 11/2" (38 mm) 6" (152 mm)
Wood Fiber 300 Polymer Screw AccuSeam®Plate into the deck O.C.
'90 psf(5.3 kPa)attachment pattern to provide 901bs per square foot of uplift resistance of the roof membrane to the deck.Consult FM Approvals'RoofNav
when a FM Approved assembly is required.
Note:For designing at elevated uplift pressures,please consult the current FM Approval Guide/ROOFNAV.
26
12 FT.(3.66 M)WIDE EVERGUARD®TPO MEMBRANE ATTACHMENT TABLE-MECHANICALLY ATTACHED OVER STEEL DECK
Deck Type Minimum Fastener Type Plate Penetration Standard 90 psf
Pull-out Values(ibs) Pattern Pattern'
750 Drill-Tec—SXHD 2-3/4"(70 mm) 12"(305 mm) 6"(152 mm)
(#21) double barbed SXHD O.C. O.C.
2"(51 mm)
Steel double barbed XHD 3/4"(19 min)
22 ga.(33 ksi) 450 Drill-Tec-XHD 2-3/8"(61 mm) through the deck 6"(152 mm) 6"(152 mm)
(#15) barbed XHD O.C. O.C.
Drill-Tec-Eye Hook®
AccuSeam®Plate
750 Drill-Tec'"SXHD 2-3/4"(70 mm)
(#21) double barbed SXHD 12"(305 mm)
2-3/4"(70 mm) O.C.
double barbed SXHD
Steel 2-3/8"(61 mm) 3/4"(19 mm) 6"(152 mm)
22 ga.(80 ksi) Drill-Tec—XHD barbed XHD through the deck O.C.
450 (#i5) 2"(51 mm) 6"(152 mm)
double barbed XHD O.C.
Drill-Tec'"Eye Hook®
AccuSeam®Plate
'90 psf(5.3 kPa)attachment pattern to provide 90 lbs per square foot of uplift resistance of the roof membrane to the deck Consult FM Approvals'
RoofNav when a FM Approved assembly is required.
PERIMETER HALF SHEET TABLE
Number of EverGuard® Number of EverGuard® Number of EverGuard®
Building Width Building Height TPO 60"(1.5 m) PVC 60"(1.5 m) TPO 72"(1.83 m)
Half Sheets Half Sheets Half Sheets
0-34' 1 1 1
(0-10 m)
<200' 35-100' 2 2 2
(61 m) (10-30 m)
>100' Formula Calulations:Install half sheet throughout the perimeter and corner region.
(30 m) The width of this region is defined as the least of the following two measurements:
0.1 x building width or 0.4 x building height.
>_200' any height Note:The minimum perimeter width is 4'(1.2 m).The width is defined as the narrowest
(61 m) dimension.
Note:FM attachment requires the Formula calculation.
27
INSULATED & NON-INSULATED TPO MECHANICALLY ATTACHED SYSTEMS SPECIFICATION PLATE
MEMBRANE TYPE CONSTRUCTION TYPE INSULATION
EVERGUARD® TPO MEMBRANE T=TPO N=NEW I=INSULATED
R=RECOVER N=NON-INSULATED
T=TEAR OFF(COMPLETE)
DRILL-TECT""FASTENERS
T MA N 1 60
Ii'lllllll� I MEMBRANE(THICKNESS AND TYPE)
I IIIIIIIIII
;IIIII
IIIIII i��i�II I1ll SUBSTRATE MEMBRANE ATTACHMENT 60= 60 MIL SMOOTH
I�III!III� III
N III i I��ll�l MA=MECHANICALLY ATTACHED 80= 80MILSMOOTH
II III �I�III lillllllll'I 60FB= 60 MIL FLEECE-BACK
ill�1
�IIIII II�II 80FB= 80 MIL FLEECE-BACK
50EX= 50 MIL EXTREME
SLIP SHEET OR FIRE BARRIER 60EX= 60 MIL EXTREME
(IF REQUIRED) 70EX= 70 MIL EXTREME
80EX= 80 MIL EXTREME
50EXFB= 50 MIL EXTREME FLEECE-BACK
60EXFB= 60 MIL EXTREME FLEECE-BACK
70EXFB= 70 MIL EXTREME FLEECE-BACK
80EXFB= 80 MIL EXTREME FLEECE-BACK
GUARANTEE LENGTH UP TO(YEARS)
MEMBRANE TYPE MEMBRANE ATTACHMENT CONSTRUCTION TYPE INSULATION
15 20 25 30
60 80 70EX
N 45 60FB 801713 70EXFB
T MA R' N 45FB 50EX 60EX 80EX
T 50EXFB 60EXFB 80EXFB
MINIMUM MEMBRANE REQUIREMENTS
1. For a non-insulated recover with smooth membrane only: Slip sheet or fire barrier required; 3 or 6 oz. (85 or 170 g.) polymat or VersaShield®Solo TM
Fire-Resistant Slip Sheet.
2. New&Tear-off only. Refer to the Guarantee Requirements Table for additional requirements on extended-length guarantees.
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Ci
EVERGUARDO 70 MECHANICALLY ATTACHED SPECIFICATIONS(CONT.)
GAF Specification EverGuard° Construction Maximum Guarantee Length
Attachment Type Insulation TPO Thickness(mil)
Number Membrane Type Type (Years)
T MA-N-N-45FB 45 15
T MA-N-N-6oFB TPO Fleece-Back Mecharncally New No 60 20
Attached
T MA-N-N-80FB 80 20
T MA-T N-45FB 45 15
T MA-T N-60FB TPO Fleece-Back Mechanically Tear-off No 60 20
Attached
T MA-T N-80FB 80 20
T MA-R-N-45FB 45 15
T MA-R-N-60FB TPO Fleece-Back Mechadcally Recover No 60 20
Attached
T MA-R-N-80FB 80 20
30
EVERGUARD EXiREW 70 MECHANICALLY ATTACHED SPECIFICATIONS
GAF Specification EverGuardo Membrane Construction Maximum Guarantee Length
Number Attachment Type Insulation TPO Thickness(mil) (Years)
T MA-N-I-50EX 50 20
T MA-N-I-60EX Extreme TPO Mechanically 60 25
New Yes
T MA-N-I-70EX Smooth Attached 70 30
T MA-N-I-80EX 80 30
T MA-T I-50EX 50 .20
T MA-T I-60EX Extreme TPO Mechanically 60 25
Tear-off Yes
T MA-T I-70EX Smooth Attached 70 30
T MA-T I-80EX 80 30
T MA-R-I-50EX 50 20
T MA-R-I-60EX 60 20
Extreme TPO Mechanically
Recover Yes
T MA-R-I-70EX Smooth Attached 70 20
T MA-R-I-80EX 80 20
T MA-N-I-50EXFB 50 20
T-MA-N-I-60EXFB Extreme TPO Mechanically 60 25
Fleece-Back Attached New Yes
T MA-N-I-70EXFB 70 30
T MA-N-I-80EXFB 80 30
T MA-T I-50EXFB 50 20
T MA-T I-60EXFB Extreme TPO Mechanically 60 25
Fleece-Back Attached Tear off Yes
T MA-T I-70EXFB 70 30
T MA-T I-80EXFB 80 30
T MA-R-I-50EXFB 50 20
T MA-R-I-60EXFB Extreme TPO Mechanically 60 20
Fleece-Back Attached Recover Yes
T MA-R-I-70EXFB 70 20
T MA-R-I-80EXFB 80 20
T MA-N-N-50EX 50 20
T MA-N-N-60EX Extreme TPO Mechanically 60 20
New No
T-MA-N-N-70EX Smooth Attached 70 20
T MA N-N-80EX 80 20
31
EVERGUARD EXTREMES 70 MECHANICALLY ATTACHED SPECIFICATIONS(CONI)
GAF Specification EverGuard® Construction Maximum Guarantee Length
" Attachment Type Insulation TPO Thickness(mil)
Number Membrane Type Type (Years) .
T MA-T N-5OEX 50 20
T MA-T N-6OEX Mechanically 60 20
Extreme TPO Smooth Tear-off No
T MA-T N-7OEX Attached 70 20
T MA-T N-80EX 80 20
T MA-R-N-5OEX 50 20
T MA-R-N-60EX Mechanically 60 20
Extreme TPO Smooth Attached Recover No
T MA-R-N-7OEX 70 20
T MA-R-N-8OEX 80 20
T MA-N-N-5OEXFB 50 20
T MA-N-N-6OEXFB Extreme TPO Mechanically d 60 20
Fleece-Back Attache New No
T MA-N-N-7OEXFB 70 20
T MA-N-N-8OEXFB 80 20
T MA-T N-5OEXFB 50 20
T MA-T N-6OEXFB creme TPO Mechanically 60 20
Fleece-Back Attached Tear off No
T MA-T N-7OEXFB 70 20
T MA-T N-8OEXFB 80 20
T MA-R-N-5OEXFB 50 20
T MA-R-N-60EXFB Extreme TPO Mechanically 60 20
Fleece-Back Attached Recover No
T MA-R-N-7OEXFB 70 20
T-MA-R-N-80EXFB F 80 20
32
INSULATED & NON-INSULATED PVC MECHANICALLY ATTACHED SYSTEMS SPECIFICATION PLATE
EVERGUARD® PVC MEMBRANE MEMBRANE TYPE CONSTRUCTION TYPE INSULATION
P=PVC N=NEW I=INSULATED
R=RECOVER N=NON-INSULATED
T=TEAR OFF(COMPLETE)
DRILL-TECT'^FASTENERS
�o
MA N 1 60
Illuil +lilt
I;IIIIiIilii{I, SUBSTRATE
Illjill{III{III 1 MEMBRANE(THICKNESS AND TYPE)
Ill,ljjlilili MEMBRANE ATTACHMENT 50= 50 MIL SSMOOTH
MOOTH
CA) ,{I{III{illi'Iili lil 'II,III MA=MECHANICALLY ATTACHED 80= 80 MIL SMOOTH
50FB= 50 MIL FLEECE-BACK
SLIP SHEET OR FIRE BARRIER 60FB= 60 MIL FLEECE-BACK
(IF REQUIRED) 80FB= 80 MIL FLEECE-BACK
50KEE= 50 MIL KEE SMOOTH
60KEE= 60 MIL KEE SMOOTH
80KEE= 80 MIL KEE SMOOTH
50KEEFB= 50 MIL KEE FLEECE-BACK
60KEEFB= 60 MIL KEE FLEECE-BACK
SOKEEFB= 80 MIL KEE FLEECE-BACK
GUARANTEE LENGTH UP TO(YEARS)
MEMBRANE TYPE MEMBRANE ATTACHMENT CONSTRUCTION TYPE INSULATION
15 20 25
50 60 80
N 50FB 60FB 80FB
P MA FZ N 50KEE 60KEE 80KEE
T 50 KEEFB 60 KEEFB 80 KEEFB
MINIMUM MEMBRANE REQUIREMENTS
1. For a non-insulated recover with smooth membrane only: Slip sheet or fire barrier required; 3 or 6 oz. (85 or 170 g.) polymat or VersaShield®Solo TM
Fire-Resistant Slip Sheet.
2. New&Tear-off only. Refer to the Guarantee Requirements Table for additional requirements on extended-length guarantees.
EVERGUARD®PVC MECHANICALLY ATTACHED SPECIFICATIONS
GAF Specification EverGuard® _ Construction Maximum Guarantee Length
Attachment Type Insulation TPO Thickness(mil)
Number Membrane Type Type (Years)
P-MA-N-I-50 50 15
P-MA-N-I-60 PVC Mechanically New Yes 60 20
Attached
P-MA-N-1-80 80 25
P-MA-T I-50 50 15
P-MA-1-I-60 PVC mechanically Tear-off Yes 60 20
AttacP-MA-T I-80 80 25
P-MA-R-I-50 50 15
P-MA-R-I-60 PVC Mechanich�y Recover Yes 60 20
AttaP-MA-R-I-80 80 20
P-MA-N-I-50FB 50 15
P-MA-N-I-60FB PVC Fleece-Back Mechanically New Yes 60 20
Attached
P-MA-N-I-80FB 80 25
P-MA-T I-50FB 50 15
P-MA-T I-60FB PVC Fleece-Back Mechanically Tear-off Yes 60 20
P-MA-T 1-80FB 80 25
P-MA-11-I-500 50 15
P-MA-R-I-60FB PVC Fleece-Back Mechanically Recover Yes 60 20
Attached
P-MA-R-I-80FB 80 20
P-MA-N-N-50 50 15
P-MA-N-N-60 PVC Smooth M AA�hed y New No 60 20
P-MA-N-N-80 80 20
P-MA-T N-50 50 15
P-MA-T N-60 PVC Smooth Mechanically Tear-off No 60 20
Attached
P-MA-T N-80 80 20
P-MA-R-N-50 50 15
P-MA-R-N-60 PVC Smooth Mecac ed y Recover No 60 20
P-MA-R-N-80 80 20
P-MA-N-N-50FB 50 15
P-MA-N-N-60FB PVC Fleece-Back Mechanically New No 60 20
AttacP-MA-N-N-80FB 80 20
P-MA-T N-50FB 50 15
P-MA-T N-60FB PVC Fleece-Back Mechanically Tear-off No 60 20
Attached
P-MA-T N-80FB 80 20
-
P-MA-R-N-50FB 50 15
P-MA-R-N-60FB PVC Fleece-Back Mechanically Recover No 60 20
P-MA-R-N-80FB 80 20
34
EVERGUARDP PVC MECHANICALLY ATTACHED SPECIFICATIONS(CONT.)
GAF Specification EverGuardm. Construction Maximum Guarantee Length
Number Membrane Type Attachment Type .,. Insulation TPO Thickness{mil} (yam),
P-MA-N-I-501KEE 50 15
P-MA-N4-60REE PVC KEE Mechanically New Yes 60 20
Attached
P-MA-N-I-80KEE 80 25
P-MA-T-I-50HEE 50 15
P-MA-T I-60KEE PVC KEE Mechanically Attached Tear-off Yes 60 20
P-MA-T I-80KEE 84 25
P-MA-R-I-50KEE 54 15
P-MA-R-I-60KEE PVC KEE Mecha y Recover Yes 60 20
ed
P-MA-R-I-80KEE 80 20
P-MA-N-I-50KEEFB 50 15
P-MA-N-I-60KEEFB PVC KEE Mechanically New Yes 60 20
Fleece-Back Attached
P-MA-N-i-$OREEFB � 80 25
P-MA-T I-50KEEFB 50 15
P-MA-T I-60KEEFB PVC KEE Mechanically Tear-off Yes 60 20
Fleece-Back Attached
P-MA-T I-80REEFB 80 25
P-MA-R-I-50KEEFB 50 15
P-MA-R-I-60KEEFB PVC KEE Mechanically Recover Yes 60 20
Fleece-Back. Attached
P-MA-R-I-80KEEFB 80 .20
P-MA N-N-50KEE 50 15
P MA N-N-60KEE PVC KEE Mechanically New No 60 20
AttacP-MA-N-N-80KEE 80 20
P-MA-T N-50KEE 50 15
P-MA-T N-64K Mechanically Attached PVC KEE shed Tear off Na 64 20
P-MA-T-N-80KEE 80 20
P-MA-R-N-50KEE 50 15
P-MA R-N-60KEE PVC KEE M� h� y Recover No 60 20
Attac
P-MA R-N-80KEE 80 20
P-MA-N-N-50KEEFB 50 15
P-MA-N-N-601KEEFB PVC KEE Mechanically New No 60 20
Fleece-Back Attached
P-MA-N-N-80KEEFB 80 20
P-MA-T N-50K EM 50 15
P-MA-T N-60KEEFB PVC KEE Mechanically Tear-off No 60 20
Fleece-Back Attached
P-MA-T N-80KEEFB 80 20
P-MA-R-N-50KEM 50 15
P-MA-R-N-60KEEFB PVC KEE Mechanically Recover No 60 20
Fleece-Back Attached
P-MA R-N-80KEEFB 80 20
35
DESIGN 1 1 ' e 1 0 ! " ' 1 1
MECHANICALLY, ATTACHEDROOFING SYSTEMS,
Part 1: General 37
Part 2: Products 38
Part 3: Execution 41
36
DOIGNON
SIDERATIGNS
e 1 1 ' 1
MECHANIGA 1 TAGHED ROOFING SYSTEMS
ILL-
TPO
FVC
PART 1 —GENERAL 1.04 Delivery,Storage,&Protection
1.01 System Description A.Deliver products to site in original containers with seals unbroken
A Mechanically attached heat-welded thermoplastic sheet roof and labeled with manufacturers'name,product brand name,
membrane systems. and type.
B.EverGuard°PVC membranes are not com atible with B.Store materials in weather-protected environment,clear of the
EverGuard°TPO and EverGuard Extreme TPO materials. ground and moisture,in accordance with GAF instructions.
DO NOT mix EverGuard®PVC with EverGuard®TPO Store all adhesives,coatings,and sealants/caulks to protect them
membranes,(lashings,and flashing accessories together from freezing.Frozen material must be discarded and replaced.
in the same roofing system.
Properly seal all liquid material containers after use.
C.Outside storage of roofing materials:
1.02 Specification Designations 1.All materials stored outside must be raised above ground or
roof level on pallets and covered with a tarpaulin or other
A.See Specification Plates in TPO/PVC Installation Specifications waterproof and"breathable"material.Insulation products
Section. should be properly stored and weighted to avoid weather and
wind damage.
1.03 Regulatory Requirements&Pre Job Conference 2.Factory-installed plastic covers are not designed for rooftop
storage.Use"breathable"type covers,such as canvas
A.Conform to all applicable building and jurisdictional codes, tarpaulins,to protect from weather and moisture.If
including roof assembly wind uplift and fire-resistance condensation is present inside of factory shroud,cut and
requirements and slope limitations.GAF recommends at least allow to vent.
V4:12 of slope with proper grading and placement of drainage 3.Cover and protect materials at the end of each day's work.
outlets.
B.Follow your local jurisdiction requirements for disposing of used 4.Do not remove any protective tarpaulins until immediately
or expired adhesives,sealants,and other products subject to before material will be installed.Extreme heat or cold
disposal regulations. conditions may require special storage.Reference product
data sheets for product storage requirements.
C.Potential problems in roofing applications,as well as potential D.Follow GAF directions and requirements for protection of roofing
conditions that may be detrimental to installation and materials prior to and during installation.
performance of the roof system,should be resolved prior to
the start of the application.This can best be accomplished E.Do NOT use materials that are wet or damaged to the extent that
by a pre-job meeting with the architect;roofing contractor; they will no longer serve their intended purposes.Remove all
general contractor;all other subcontractors whose work damaged materials from the job site.
will involve the roof system/related systems;and a GAF F.When staging materials on the roof during application,ensure
representative. the deck and structure are not temporarily overloaded by the
D.The following are common items of discussion at a pre-job weight of construction materials.
conference: G.At the job site,no more material should be stored than will be
1.Submittals of materials,drawings,and project documents. used within two weeks.For periods longer than two weeks,the
2.Roof deck conditions. materials should be properly warehoused;i.e.,dry,ventilated,on
pallets,etc.No more material should be stored on the rooftop
3.Flashing and expansion joint details. than can be used within five days.When prolonged inclement
4.Insurance underwriters or building code requirements. weather threatens,i.e.,rainy seasons,no more roofing materials
should be supplied to the rooftop than can be used
5.Unusual project conditions. within two days.
6.Protection of the roof,building,building occupants,and
contents during and after application.
1.05 Environmental Requirements&Restrictions
7.Application techniques.
A.Do not apply roofing materials during inclement or
8.Coordination and scheduling of other trades that will be threatening weather.
working on the project. B.Do not expose materials vulnerable to water or sun damage
9.Designation by the roofing contractor of a qualified person in quantities greater than can be weatherproofed during the
responsible for quality control.This person should be on the same day.
project full time during application of the roof system. C.Be aware that high or gusting winds make the installation
10.Scheduling of material shipments,material storage,and of some materials more difficult.
rooftop loading. D.Material installation during periods of high ambient temperature
and/or humidity levels[typically above 90°F(32°C)and/or
90%relative humidity]can result in poor installation quality
due to condensation on the membrane surface or excessively
fast adhesive drying rates in hot,dry weather.Do not install
37
D 1 11 : ° ' 1 1
1 ROOFING
.O PVC
materials when moisture,such as liquid water,dew,condensate, PVC roofing application should install these systems.Never
snow or ice,is present on the roof deck or substrate to which the allow contact between the heated surface'of a hot welder or
materials are to be applied. other tool and the applicator's hair,skin,or clothing.Always
E.Material installation during periods of low ambient temperatures, wear protective gear,including but not limited to:hardhats,eye
typically below 45OF(7.20C),can result in poor installation protection,heavy-duty gloves,and snug-fitting clothing.
quality.To avoid these problems: C.Solvent-containing accessories may be combustible and should
1.Store accessory materials in a warming box. always be kept from heat,flame,or any source of ignition.Empty
containers must be disposed of in posted toxic substance landfills
2.Use as soon as possible after removal from warming box. in accordance with local,state,and federal regulations.
3.Allow adhesives to properly cure. D.Thoroughly train all personnel in first-aid procedures,and
4.Adjust welder settings to ensure proper welds for applicable always comply with all OSHA safety standards and fire codes.
ambient conditions. Also,use extreme caution when working around equipment,
such as gas lines or HVAC units,which have electrical or
gas connections.
1.06 Working Environment E.EverGuard®TPO or PVC roof membranes may be slippery
A.Work should only begin when the contractor has decided to his/ when wet.Exercise caution when walking on the TPO or PVC
her satisfaction that all specifications are workable as specified, membranes during or after a rain shower,or if moisture is
and that the contractor can meet project and code requirements. present in the form of dew,frost or ice.Pay attention while
walking on light-colored surfaces as ice or frost build-up may not
B.The contractor should only begin roofing work when the be as visible as on a dark surface.
substrate(s)have been prepared as necessary,and are ready to
accept the roofing materials installed as specified.
C.Provide a safe working environment,including,but not limited PART 2-PRODUCTS
to,adequate fall protection,restriction of unauthorized access to 2.01 Membrane
the work area,and protection of the building and its occupants. A.EverGuard®TPO
D.Safe work practices should be followed,including,but not limited B.EverGuard Extreme®TPO
to,keeping tools in good operating order;providing adequate
ventilation if adhesives are used;and daily housekeeping to C.EverGuard®TPO FB Ultra
remove debris and other hazards.See section 1.07 for further D.EverGuard Extreme®TPO FB Ultra
details on safety.
E.Protect the building,contents,surrounding area,building E.EverGuard°PVC
occupants,and contractor personnel during work.Coordinate all F.EverGuard®PVC Fleece-back
work operations with the building owner and building occupants G.EverGuard°PVC KEE
so that adequate interior protection,as necessary,is provided and
disruption to normal building operations is minimized. H.EverGuard®PVC KEE Fleece-back
F.Where heavy wheeled or other traffic over the partially completed
roofing is unavoidable,provide and use adequate plank or 2.02 Flashing-Wall&Curb
plywood,set over a minimum thickness of rigid board insulation
to protect the newly installed roof. A.EverGuardO membrane flashing should be of the same type and
thickness as the roofing membrane.EverGuard Freedom—TPO
G.Provide temporary water cut-offs and tie-ins at the end of each can be used with EverGuard®TPO membrane for flashing in the
workday.Remove all temporary work at the beginning of the same thickness as the field membrane.
next workday.
B.The use of EverGuard Extreme TPO flashings is required on
H.When tearing off an existing membrane,limit removal to the EverGuard Extreme°systems.
area that will be completely reroofed that day with the new
roofing system. C.Because colored TPO membranes may exhibit different welding
characteristics,please call 800-766-3411 before attempting to
I.If conditions are uncovered or created that would be detrimental weld different-colored TPO membranes with white membranes or
to the proper execution of specified work,immediately notify the fleshings.
building owner and the designer of record of these conditions for
consultation on acceptable remedy or resolution of the problem. D.EverGuard®TPO and PVC Fleece-Back®embranes are optional
flashing membranes for all EverGuard TPO and PVC roofing
systems,respectively.These membranes may be a solution when
1.07 Safety Considerations&Warnings a contaminated substrate is encountered.
A.As with any construction project,safety is a key element.All
applicable safety standards and good roofing practices must 2.03 Flashing Accessories
be followed.Read and understand GAF's Design&Application
Guidelines before starting application.Follow all precautions A.EverGuardO preformed flashing accessories must be of the same
and directions. type as the roofing membrane.
B.Only properly trained and professionally equipped roofing
contractors experienced in the installation of each TPO and
38
DESIGN CONSIDERATIONS s APPLICATIOR GUIDELINES:
MECHANICALLY ATTACHED ROOFING,
°O&PVC
B.For a full listing and descriptions of the latest EverGuard®TPO D.Cleaners
and EverGuard Extreme®TPO preformed flashing accessories,see 1.EverGuard®CleanWeld-Conditioner(low-VOC)
the appropriate Product Data Sheets for the specific membranes
with which you are working. 2.EverGuard®TPO Seam Cleaner
C.The use of EverGuard Extreme®TPO flashing accessories is 3•EverGuard®PVC Membrane Conditioner
required on EverGuard Extreme°systems.
D.Unreinforced EverGuard Extreme®flashing membrane is 2.06 Traffic Protection
available and required on areas where prefabricated accessories
cannot be used or are unavailable. A.EverGuard®TPO Walkway Roll
E.All EverGuard®accessories must be stored indoors and 1.This product is designed to be heat-welded to the top of GAF
protected from moisture and extreme temperatures.See specific TPO roofing membranes.
instructions on packaging for further details. 2.The Walkway Roll is available in standard gray or"safety"
yellow color with a"diamond tread"pattern,and comes in
2.04 Fasteners 34.25"x 50"(870 mm x 15.2 m)rolls.
A.Refer to the Insulation Attachment Table and the appropriate 3.The EverGuard®TPO Walkway Roll features a 2" (51 mm)
Membrane Attachment Table in this Manual for the correct type, welding strip(smooth border)along each longitudinal edge
length,and diameter of fastener. that is compatible with hand-or automatic welders.
B.Use fasteners that are suitable for the deck type,and ensure the B.EverGuard®PVC Walkway Roll
deck is of the required thickness and condition to ensure reliable 1.This product heat-welds directly to GAF EverGuard®PVC
installation and performance. roofing membranes.
C.Fasteners used in flashings should be dictated by the substrate. 2.The Walkway Roll is available in standard gray with a
D.Drill-Tec-"flat"plates(without the countersunk screw holes "herringbone"traction surface,and comes in 30"x 36"
protruding from the bottom of the plates)are required when (762 mm x 914 mm)rolls.
plates are installed over hard surfaces such as wood decks, 3.The EverGuard®PVC Walkway Roll features a 2" (51 mm)
DensDeck®,SECUROCO or other hard cover boards to allow the welding strip(smooth border)along each longitudinal edge
plates to rest flush on the surface. that is compatible with hand or automatic welders.
2.05 Adhesives,Sealants,Primers,&Cleaners 2.07 Insulation
A.Adhesives(Vertical Flashings Only on Mechanically Attached A.The selection of insulation type,thickness,and configuration
Systems) is the responsibility of the architect,engineer,owner,or roof
1.Solvent-Based consultant.GAF reserves the right to accept or reject any roof
insulation as an acceptable substrate for GAF roof systems.GAF
a.EverGuard®#1121 TPO Bonding Adhesive insulation must be used in roofing systems to be guaranteed by
b.EverGuard®TPO Low VOC Bonding Adhesive GAF.
2.Water-Based B.Insulation boards of the types listed below are acceptable for use
in roofing systems guaranteed by GAF.The actual minimum
a.EverGuard®WB 181 Bonding Adhesive(Smooth TPO thickness of insulation will depend on flute spacing.Refer to
only) specific Product Data Sheets for further information.Board size
b.EverGuard TPO Quick Spray Adhesive can be 4'x 4'or 4'x 8' (1.2 in x 1.2 in or 1.2 in x 2.4 m)panels
c.EverGuard TPO Quick Spray LV50 Adhesive for mechanical attachment.
3.Low-Rise Foam(LRF) (Insulation only) 1. EnergyGuard-Polyiso Insulation is made of glass
fiber-reinforced cellulosic felt facers bonded to a core of
a.LRF-M Adhesive polyisocyanurate foam.Meets or exceeds the requirements
b.OlyBond5001 Adhesive of ASTM C1289 Type II,Class 1,Grade 2(20 psi),and
available in Grade 3 (25 psi).
B.Sealants 2. EnergyGuard-Tapered Polyiso Insulation is made of glass
1.EverGuard®One-Part Pourable Sealant(urethane based) fiber-reinforced cellulosic felt facers bonded to a core of
2.FlexSeal-Caulk Grade Sealant polyisocyanurate foam.It is readily available in various
slopes such as the most popular and efficient tapers,l/8:12
3.F1exSeal-IV Caulk Grade Sealant(low-viscosity) (1%),1/4:12(29/6),and 1/2:12(496).Meets or exceeds the
4.EverGuard®Water-Block requirements of ASTM C1289 Type II,Class 1,Grade 2(20
5.EverGuard®TPO Cut Edge Sealant psi),and available in Grade 3(25 psi).Maximum board
size is4'x4'(1.21mx1.21m).
C.Primers 3. EnergyGuard-Ultra Polyiso Insulation is made of
1.EverGuard°TPO Primer coated glass-fiber mat facer laminated to a closed-
2.EverGuard®Low VOC Primer cell polyisocyanurate foam core.Meets or exceeds the
requirements of ASTM C1289 Type II,Class 2,Grade 2(20
psi),and available in Grade 3(25 psi).
39
-A
DESIONCOMSIDERATIONS
APPLICATION
MECHANICALLY 1 / • o MIS
•, : PVC
4. EnergyGuard—NH Polyiso Insulation is made of glass- 6. Expanded Polystyrene Insulation(EPS)with plastic facer
reinforced cellulosic felt facers bonded to a core of non- meets or exceeds the requirements for ASTM C578,Type IX
halogenated polyisocyanurate foam.Meets or exceeds the [min.25 psi(173 kPa)compressive strength].
requirements of ASTM C1289 Type II,Class 1,Grade 2(20 7 Extruded Polystyrene Insulation(XPS)meets or exceeds
psi),and available in Grade 3(25 psi). the requirements for ASTM C578,Type IV[min.25 psi(173
5. EnergyGuard—NH HD Ultra Polyiso Insulation is made of kPa)compressive strength].
coated glass facers bonded to a core of non-halogenated
polyisocyanurate foam.Meets or exceeds the requirements
of ASTM C1289 Type I1,Class 2,Grade 2(20 psi),and 2.09 Cover/Re-cover Boards
available in Grade 3(25 psi). A.Cover/Re-cover boards of the following types listed below are
6. EnergyGuard—Perlite roof insulation is composed of acceptable for use in roofing systems guaranteed by GAF.Board
expanded perlite particles,selected binders and cellulose size can be 4'x 4'or 4'x 8' (1.21 m x 1.21 m or 1.21 m x 2.4 m)
fibers that meets or exceeds the requirements of ASTM panels for mechanical attachment and 4'x 4'or 4'x 8' (1.21 m
C728,Type I. x 1.21 m or 1.21 m x 2.4 m)for adhered attachment and tapered
7. EnergyGuard—Tapered Perlite roof insulation is composed systems,except for fanfold re-cover board,which comes in 2' (610
of expanded perlite particles,selected binders and cellulose mm)x 4' (1.21 m)sections with a 50' (15.2 m)total length.
fibers that meets the requirements of ASTM C728,Type I. 1. EnergyGuard—HD Polyiso Insulation is a W' (12.7 mm)
8. Expanded Polystyrene Insulation(EPS)with plastic facer thick high-density polyiso cover board made of coated
meets or exceeds the requirements of ASTM C578,Type II Oass-fiber mat facers bonded to high-density closed
nominal 1.5 lb.(42 g/cm3)density and minimum 15 psi cell polyisocyanurate foam cores.Meets or exceeds the
(110 kPa)compressive strength. requirements of ASTM C1289 Type 2,Class 4,Grade 1(80
psi).
9. Extruded Polystyrene Insulation(XPS)meets or exceeds the 2. EnergyGuard-HD PLUS Polyiso Insulation is a'V' (12.7
requirements of ASTM C578,Type II nominal 1.5 lb.(42 g/ mm)thick high-density polyiso cover board made of
cm')density and minimum 15 psi(110 kPa)compressive coated glass-fiber mat facers bonded to high-density closed
strength. cell polyisocyanurate foam cores.Meets or exceeds the
requirements of ASTM C1289 Type 2,Class 4,Grade 2(110
2.08 High Traffic Applications psi)-
A.Insulation boards of the types listed below are acceptable for use 3• EnergyGuard-Barrier Polyiso Insulation consists of coated
in roofing systems guaranteed by GAF.The actual minimum glass-fiber and a special coated glass-fiber laminated to a
thickness of insulation will depend on flute spacing.Refer to closed-cell polyisocyanurate foam core.Meets or exceeds
specific Product Data Sheets for further information.Board size the requirements of ASTM C1289 Type 2,Class 4,Grade 2.
can be 4'x 4'or 4'x 8' (1.2 m x 1.2 m or 1.2 m x 2.4 m)panels 4. USG SECUROCK®Brand Gypsum-Fiber Roof Board is a
for mechanical attachment high-performance,non-combustible,moisture and mold
1. EnergyGuard—Polyiso Insulation is made of glass resistant roof board that meets the requirements of ASTM
fiber-reinforced cellulosic felt facers bonded to a core of C1278.
polyisocyanurate foam.Meets the requirements of ASTM 5. DensDeck®and DensDeck®Prime Roof Board is made of
C1289 Type 11,Class 1,Grade 3(25 psi)min. glass mat facings front and back that are embedded into a
2. EnergyGuard—Tapered Polyiso Insulation is made of glass water-resistant and moisture-resistant treated gypsum core.
fiber-reinforced cellulosic felt facers bonded to a core of Meets the requirements of ASTM C1177.
polyisocyanurate foam.It is readily available in various 6.STRUCTODEK®High Density Fiberboard Roof Insulation
profiles such as the most popular and efficient tapers, Cover Board with Primed Red Coating incorporates a non-
1/8:12(19/6),1/4:12(29/6),and 1/2:12(49Q.Meets or asphaltic Primed Red Coating integrated on the surface
exceeds the requirements of ASTM C1289 Type II,Class 1, board that meets the requirements of ASTM C208,Type II,
Grade 3(25 psi).Maximum board size is 4'x 4' (1.21 m x Grade 1 and Grade 2.
1.21 m). 7.EnergyGuard—Perlite roof insulation is composed of
3. EnergyGuard—Ultra Polyiso Insulation is made of expanded perlite particles,selected binders and cellulose
coated glass-fiber mat facer laminated to a closed- fibers that meets the requirements of ASTM C728,Type I.
cell polyisocyanurate foam core.Meets or exceeds the 8.Extruded Polystyrene Insulation Fan-fold Re-cover Board
requirements of ASTM C1289 Type II,Class 2,Grade 3(25
psi). 3/8"(9.5 mm)with plastic facer meets or exceeds the
requirements for ASTM C578,Type IV[min 25 psi(173
4. EnergyGuard—NH Polyiso Insulation is made of glass- kPa)compressive strength].
reinforced cellulosic felt facers bonded to a core of non- 9•Extruded Polystyrene Insulation Re-cover Board 1/2" (13
halogenated polyisocyanurate foam.Meets or exceeds the mm)with plastic facer meets or exceeds the requirements
requirements of ASTM C1289 Type II,Class 1,Grade 3(25 for ASTM C578,Type IV[min 25 psi(173 kPa)compressive
psi). strength].
5. EnergyGuard—NH HD Ultra Polyiso Insulation is made of
coated glass facers bonded to a core of non-halogenated
polyisocyanurate foam.Meets or exceeds the requirements
of ASTM C1289 Type II,Class 2,Grade 3(25 psi).
40
MECHARIGALLY ATTACHED ROOFING"
°O e °VC
10.Expanded Polystyrene Insulation Fan-fold Re-cover Board E.Protect building surfaces against damage and contamination
3/8" (9.5 mm)with plastic facer meets or exceeds the from roofing work.
requirements for ASTM C578,Type IX[min 25 psi(173 F.Where work must continue over completed roof areas,protect the
kPa)compressive strength]. finished roofing system from damage.
11.Expanded Polystyrene Insulation Re-cover Board 1/2"(13 G.Deck preparation is the sole responsibility of the building owner
mm)with plastic facer meets or exceeds the requirements or roofing contractor.All defects in the roof deck or substrate
for ASTM C578,Type IX[min 25 psi(173 kPa)compressive must be corrected before roofing work commences.
strength].
H.Refer to GAF Roof Guarantee Program for specific requirements
for extended guarantees.
2.10 Base Sheets
A.Not required. 3.02 Preparation Of Roofing Area—New&Tear-off
Applications
2.11 Slip Sheet/Protection Layer A.Remove all existing roofing materials to the roof decking,
A.EverGuard®Polymat slip sheet,3.0 o7,/sq.yd.(102 g/sq.m.). including flashings,metal edgings,drain leads,pipe boots,and
pitch pockets,and clean substrate surfaces of all asphalt and
B.EverGuard®Polymat cushioning slip sheet,6.0 o7,/sq.yd. adhesive contaminants.
(203 g/sq.m). B.Confirm quality and condition of roof decking by visual
C.GAF VersaShield®Solo—Fire-Resistant Slip Sheet. inspection and by fastener pull-out testing by an individual
trained by the roof fastener manufacturer.GAF recommends
these test results to be kept on file as part of the acceptability
2.12 Other Accessories of the substrate surface for a Diamond Pledge—NDL Roof
A.The following items may also be required,depending on the Guarantee.Submission of results to GAF is not required.
project: C.Secure all loose decking.Remove and replace all
1.Wood Nailers:New wood nailers must be#2 or better lumber. deteriorated decking.
Do NOT use asphaltic or creosote-treated lumber. D.Remove abandoned equipment and equipment supports.
2.Roofing Nails:Galvanized or non-ferrous type and size as E.Confirm that height of equipment supports will allow the
required to suit application. installation of full-height flashings.
3.Temporary Sealant:Polyurethane foam sealant or similar as F.Refer to Section 3.06 for air/vapor retarders.
required to provide temporary watertight sealing of roofing.
G.For extended-length guarantees,new roof construction or a tear-
4.Air/Vapor Barrier:Polyethylene sheeting,min.6 mil.for off is required.For tear-offs,remove all existing roofing materials
TPO only. to the roof deck.This includes fleshings,metal edgings,drain
5.Fire Barrier:Gypsum panels,min.1/a"(6.3 mm)thick leads,pipe boots,and pitch pockets.
(DensDeck®;DensDeck®Prime or SECUROCK—Roof
Board).
3.03 Preparation Of Roofing Area—Re-cover Applications
PART 3—EXECUTION A.Remove all surfacing and debris from the roof surface.
B.Remove blisters and ridges from the roof membrane.
3.01 Site Conditions C.When re-covering over an existing single-ply roof,that roof must
A.Obtain verification that the building structure can accommodate be first cut into maximum 10'x 10' (3 m x 3 m)areas before the
the added weight of the new roofing system. application of new slip sheet and/or membrane.
B.Confirm the adequacy of the new roofing system to provide 1.PVC must be separated from existing PVC roofs and other
positive slope to drain.Eliminate ponding areas by the addition types of single-ply membranes and asphaltic membranes
of drainage locations or by providing additional pitch to the roof that have active sealants,including asphalt cement,single-
surface. ply adhesives,or other non-compatible materials.This
C.Prepare substrate surfaces thoroughly prior to application of new can be accomplished by installing a polymat slip sheet,
roofing materials.This is particularly important for re-cover and insulation,cover board,or fleece-back PVC membrane.
reroofing applications.Providing a smooth,even,sound,clean, 2.Installation over an existing mechanically attached
and dry substrate minimizes the likelihood that underlying membrane is only acceptable if all existing fasteners are
deficiencies will cause premature deterioration or even failure of flush and do not cause ridging/tenting at the existing
the new roofing system. membrane.
D.All defects in the roof deck or substrate must be corrected by the D.Remove all existing flashings,including metal edgings,drain
responsible parties before new roofing work commences.Verify leads,pipe boots,and pitch pockets,and clean substrate
that the deck surface is dry,sound,clean,and smooth,and free surfaces of all asphalt and adhesive contaminants.If the wall/
of depressions,waves,or projections. curb flashings are in good condition and tightly adhered to the
substrate,new TPO or PVC flashing materials may be installed
over these to a height of 30" (762 mm)without adhesives for
41
DESIGN 1 ! 1 1GUIDELINES:
MECHAN]"LLY ATTACHED,ROOFING
°/
sheets up to 10' (3 m)wide.For sheets up to 12' (3.5 m)wide, 3.05 Gypsum Board Installation
flashings may be installed up to 36"(914 mm).New PVC A.General
flashing materials must be installed over a layer of polymat or
insulation board. 1.Gypsum fire barrier board must typically be installed when
E.The existing roof surface must be free of visible moisture,such as required by design professional or code authority to address
ponding water,ice,or snow. code or approval requirements.
F.It is strongly recommended that the budding owner have a B.Placement
moisture survey performed to ascertain the condition and 1.Butt gypsum boards together with a`/a' (6.3 mm)
suitability of the existing roofing materials to receive a re-cover maximum space between adjoining boards.Fit gypsum
system.A survey is REQUIRED if perlite or wood fiber insulation boards around penetrations and perimeter with a'/a"
is used in a re-cover system.GAF will not be responsible for (6.3 min)maximum space between board and penetration.
damage to the roofing system resulting from moisture in the 2.Install gypsum boards in pieces a minimum of 2'x 2'
existing roofing system.Remove and replace all existin roofing (610 mm x 610 mm)in sire.Every piece must be properly
materials that contain moisture. secured to the substrate.
G.Confirm quality and condition of roof decking by visual 3.Gypsum boards installed in multiple layers must have the
inspection if possible,and by fastener pull-out testing.Remove joints between boards staggered in all directions a minimum
and replace all deteriorated decking. of 6" (152 nun)between layers.
H.Test cuts 4.Gypsum boards installed over steel decking must have boards
1.Take test cuts to verify the existing roof construction and placed perpendicular to deck flutes with edges over flute
condition.Generally three test cuts should be made for roofs surface for bearing support.
under 100 squares(920 sq.m)and one test cut per 100 5.Do NOT use gypsum boards that are wet,warped,or buckled;
squares(920 sq.in)above the minimum amount. they must be discarded.Boards that are broken,cracked,or
2.Test cuts must be representative of the roofing system(s). crushed must not be installed unless the damaged area is
I.Remove abandoned equipment and equipment supports. first removed and discarded.
J.Raise equipment supports to allow the installation of full-height 6.Remove and replace gypsum boards that become wet or
flashings. damaged after installation.
K.Re-cover installations over coal tar itch roofs are not 7.Install no more gypsum board than can be properly covered
p recommended.However,if the designer of record chooses to with roofing membrane by the end of each day.
re-cover over an existing coal tar pitch roof,GAF requires the C.Securement
following: 1.Mechanical Attachment
1.Existing loose gravel must be broomed or vacuumed(do not a.Use appropriate number,type,and length of Drill-
spud). Tec-fastener for structural deck type.See Insulation
2.If high spots remain,a thicker insulation board must be Attachment Tables in this Manual.
used to provide a smooth substrate for the EverGuard® b.pre-drilling is required for concrete decks,and may be
membrane. required for gypsum concrete and cementitious wood
3.A minimum 1"(25 mm)re-cover board is required for TPO fiber decks.
applications. c.Install fastener so as to firmly imbed the plate to the
4.A minimum 1.5"(38 mm)re-cover board is required for insulation surface without over-driving.
PVC applications.
5.Do not use a EPS/XPS re-cover board over coal tar pitch 3.06 Air/Vapor Retarder Installation
roofs.
A.General
3.04 Wood'Nailer Installation 1.Air/Vapor retarder components must typically be installed
when required by the design professional to address internal
A.General building air pressure or humidity conditions.
1.GAF recommends perimeter blocking and flashing be B.Application—Loose Applied
installed in accordance with the most current version of 1.Install the air/vapor retarder components loose-applied to
ANSI/SPRI ES-1 and FM Global Property Loss Prevention the deck or fire-barrier board so that wrinkles and buckles
Data Sheet 1-49. are not formed.
2.Additionally,GAF does not guarantee the attachment of the 2.Overlap vapor retarder components per applicable installation
wood nailers,nor the performance of the wood nailers or any recommendations of the supplier.If minimum 6 mil
leaks that may be caused by nailer installation. polyethylene is used,overlap a minimum of 6"(152 mm).
3.Seal perimeter and penetration areas with foam sealant.
42
DESIGN CONSIDERATIONS. ; l e e l 1 1
MECHANICALLTATTA HE
� ROOFING
eO s PVC
4.Seal all perimeter nailers with adhered roof membrane of details to ensure a temporary seal or GAF will have no
placed over the nailer and covering the exterior face of the responsibility for any moisture infiltration that results from
nailer by 1"(25 mm). improper seals or phasing.
7.Install no more gypsum board than can be properly covered 11.All T-joints and 90 degree transitions must be sealed with
with roofing membrane by the end of each day. MatrixT"f 201 SBS Flashing Cement.If fishmouths or other
C.Application—Adhered openings are created at overlap,they must be repaired and
sealed with MatrixTm 201 SBS Flashing Cement.All wet
1.Apply compatible adhesive to the structural deck or fire and damaged materials or leaks through the GAF SA Vapor
barrier board per air/vapor retarder manufacturers' Retarder must be repaired before installing the finished roof.
recommendations. 12.GAF SA Vapor Retarder is UV resistant up to 90 days.The
2.Install the vapor retarder components loose applied to the 90-day UV resistance refers to standardized testing conducted
deck or fire barrier board so that wrinkles and buckles are to ensure the product will not physically degrade when
not formed.Broom air/vapor barrier components to ensure exposed to UV.GAF SA Vapor Retarder is NOT waterproof.
embedment into the adhesive. DO NOT USE GAF SA Vapor Retarder as a temporary roof to
3.Overlap vapor retarder components a minimum of 6" protect property or possessions.
(152 mm)for side and end laps.Adhere laps together with
compatible adhesive.
3.07 Polymat Slip Sheet Installation
4.Seal perimeter and penetration areas with foam sealant. A.General
5.Install insulation boards over the vapor barrier and 1.Install polymat slip sheet between the roofing membrane
mechanically attach the boards to the deck or adhere the and the substrate in accordance with the Design Table at the
boards to the air/vapor retarder with compatible adhesive to front of this Manual.
achieve the desired roof system uplift resistance.
D.Application—Self-Adhered 2.Install polymat slip sheet loose-applied over substrate surface
so that wrinkles and buckles are not formed.
1.Roll out the GAF SA Vapor Retarder over clean,dry deck and
allow to relax.For metal decks,the width of the membrane 3.Overlap polymat slip sheets a minimum of 6" (152 mm)for
is designed to match with the top of the flute. side and end laps.
2.GAF SA Primer is not required for metal decks.Other
acceptable substrates(plywood,gypsum,or concrete)must 3.08 Fire-Resistant Slip Sheet/Coating Installation
be primed prior to application. A.General
3.Apply GAF SA Primer using brush,roller,or sprayer at 1.GAF VersaShield®Solo—Fire Resistant Slip Sheet is typically
approximately 0.5-0.66 gallons per 100 square feet(0.2-0.27
L/m2).Lightly prime for uniform coverage.Do not apply installed when required by design professional or code
primer in heavy or thick coats. authority to address code or approval requirements,or as a
slip layer in accordance with the Design Table at the front of
4.Place GAF SA Vapor Retarder in desired position.Once the this Manual.
membrane is in place,while holding the membrane tight, a.Install GAF VersaShield®Solo—Fire Resistant Slip Sheet
peel off the silicone release film by pulling diagonally from loose-applied over substrate surface so that wrinkles and
the underside of the sheet. buckles are not formed.
5.Install subsequent rolls of membrane in the same way, b.Overlap GAF VersaShield®Solo'Fire Resistant Slip Sheet
taking care to overlap the longitudinal side la s a minimum of minimum of 2" (51 mm)for side and 4" (102 mm)
of 3" (76 mm)and end laps a minimum of 6p (152 mm). for end laps.
6.For metal decks,install a 6"x 42"(152 mm x 1.07 m) c.GAF VecsaShield®Solo"Fire Resistant Slip Sheet should
metal plate at the end of the roll to support the membrane be installed perpendicular to the direction of the TPO
end lap between the metal flutes,ensuring a complete end membrane.
lap seal.Overlap end laps a minimum of 6" (152 mm).
7.Once installed,pressure must be applied over the whole d.Typically GAF needShield®Solo'"Fire Resistant Slip
surface using a weighted roller to ensure adequate adhesion Sheet does not need with
1 (25 m .However,1"
to the substrate. (25 mm)cap nails with 1' (25 mm)minimum head
or appropriate fasteners and plates may be used until
8.Seal perimeter and penetration areas with closed-cell foam the primary roof can be installed.Do not install more
sealant.The GAF SA Vapor Retarder must be tied into the VersaShield®Solo—than can be covered with finished
building's air/vapor retarder system as appropriate with roofing in that same day.For additional instructions,
compatible SBS asphaltic materials. please visit www.gaf.com.
9.Because the water resistance characteristics of vapor retarders 2.GAF FireOut—Fire Barrier Coating is installed at an
can be compromised by storms,physical damage and application rate of one gallon per 100 sq.ft. (9 sq.m)via
installation issues,vapor retarders should be covered by a spray,brush,or roller.The substrate must be clean,dry,and
primary roof covering as soon as possible after installation. free of foreign matter.
10.If GAF SA Vapor Retarder is not immediately covered,
particular attention should be paid to implementation
43
RESIGN CONSIDERATIONS
! ! ■ ■ 1 f
MECHANICALLY WTAGHED ROOFING SYSTEMS
■® : ■
3.09 Base Sheet 2.Foam Adhesive of supplemental Insulation
A.Not required. a_For supplemental securement of saddles or crickets to
insulation with low-rise foam adhesive,GAF recommends
a 1" (25 mm)bead width spaced 12" (305 mm)on
3.10 Re-cover Board/insulation Installation center.
A.General
1.Refer to section 2.09 of this Manual for specific GAF 3.11 Membrane Installation
requirements on cover/re-cover boards. Substrates must be inspected and accepted by the contractor as
2.Install insulation board and re-cover board as required in suitable to receive and hold roof membrane materials.
accordance with the Design Tables in this Manual. Note:EverGuard Extreme®has a light gray backer sheet to
3.The use of extruded or expanded polystyrene insulation is distinguish it from regular TPO membrane.It is the
limited in PVC roofing systems.These insulation types are to contractor's responsibility to install EverGuard Extreme®
be used under a fleece-bask membrane,with an approved where specified on the roof;i.e.,under highly reflective
slip sheet or non-EPS/XPS cover board. glass or metal,or wherever sustained exposure to high
B.Placement temperatures requires.
1.Butt insulation boards together with a'/a" (6.3 mm) A.Substrate Surface Preparation
maximum space between adjoining boards.Fit insulation 1.Prepare substrate surfaces thoroughly prior to application
boards around penetrations and perimeter with a'/a" of new roofing materials.This is particularly important for
(6.3 mm)maximum space between board and penetration. re-cover and reroofing applications.
Do not kick insulation boards into place. 2.Preparation includes,but is not limited to,removal of
2.Install insulation boards in pieces a minimum of 2'x 2' existing flashings,replacement of wet/damaged existing
(610 mm x 610 mm)in size.Every piece must be properly roofing materials,removal of loose aggregate,removal
secured to the substrate. of abandoned equipment,supports and penetrations,
3.Insulation boards installed in multiple layers must have the replacement of damaged decking,etc.
joints between boards staggered in all directions a minimum 3.Providing a smooth,even,sound,clean,and dry substrate
of 6" (152 mm)between layers. minimizes the likelihood that underlying deficiencies will
4.Insulation boards installed over steel decking must have cause premature deterioration or even failure of the new
boards placed perpendicular to deck flutes with edges over roofing system.
flute surface for bearing support. B.Placement
5.Install tapered insulation to provide a sump area a 1.Place roof membrane so that wrinkles and buckles are not
minimum of 36"x 36" (914 mm x 914 mm)where formed.Remove any wrinkles or buckles from the sheet
applicable. prior to permanent securement.Roof membrane must be
6.Do NOT install insulation boards that are wet,warped,or mechanically fastened after it is rolled out,followed by
buckled;they must be discarded.Insulation boards that are welding to adjacent sheets.
broken,cracked,or crushed must not be installed unless the 2.Full-width rolls must be installed in the field of the roof.
damaged area is first removed and discarded.
3.Half-width rolls must be installed in the perimeter region
7.Remove and replace insulation boards that become wet or of the roof.Width of the roof perimeter region must be
damaged after installation. determined in accordance with the Perimeter Half Sheet
8.Install no more insulation than can be properly covered by Table in this Manual.
the end of each day with roofing membrane. 4.Install membrane so that the laps run across the roof slope
9.EPS,XPS,or polyiso insulation may be used to fill in lapped toward drainage points.On metal decking,install
flutes of steel decking. sheets perpendicular to deck direction so that fasteners
will penetrate the top flanges and not the flutes;however,
C.Securement there will be limited areas of the roof(i.e.,perimeter areas)
1.Mechanical Attachment of Insulation. where this is not practical.if the deck is running opposite
a Use appropriate number,type,and length of Drill- the slope of the roof(flutes running horizontally),then
the membrane should run ridge-to-gutter to ensure proper
Tec—Fastener for structural deck type.See Insulation fastening to the top flanges of the deck.
Attachment Tables in this Manual.
b.Pre-drilling is required for concrete decks,and may be 5•TPO/PVC
required for gypsum concrete and cementitious wood a.For TPO membranes,overlap roof membrane a
fiber decks. minimum of 6" (152 mm)for side laps of mechanically
attached systems.Membranes are provided with lap lines
c.Install fastener so as to firmly secure the plate to the along the side laps;the inside line is for mechanically
insulation surface without overdriving. attached system overlaps.TPO fastener spacing marks
should resemble a"pyramid"pattern.
44
DESIGN CONSIDERATIONS ; "APPLICIATiON1
MECHANICALLY ATTACHED '00FINOSYSTEMs
s/ a PVC
b.For PVC membranes,the solid line(overlap line)is attachment requirements,with a 12" (305 mm)o.c.
marked on the top ply 5" (127 mm)from the sheet edge. maximum spacing.Vertical attachment with seam plates
The fastener line is a nominal 2"(51 mm)from the and fasteners may also be used.This alternative detail,
sheet edge,and an"X"is placed between the sheet edge including termination bar,is required for pressurized
and the field seam overlap fine with spacing every 6" buildings.
(152 mm). c.Install fasteners so that the plate is drawn down tightly
6.For selvage edge laps of EverGuard®PVC and TPO to the membrane surface.Properly installed fasteners
membranes,overlap the roof membrane a minimum of 3" will not allow the plate/termination bar to move
(76 mm)and heat weld the laps.Non-salvage end laps of (underdriving),and will not cause wrinkling of the
EverGuard®PVC and TPO Fleece-Back membranes are made membrane(overdriving).
by butting adjacent sheets and heat welding an 8" (203 D.Supplemental Securement
mm)wide EverGuardO PVC and TPO reinforced membrane
flashing strip over the end laps.Alternatively,an 8" (203 1.In the corner areas,additional fasteners will also be installed
mm)wide flashing strip can be cut out of smooth PVC through the perimeter half-width membrane rolls to form
membrane of the same thickness as the field sheet and used a grid pattern,with an 8" (203 mm)wide reinforced
as the flashing strip. membrane flashing strip heat-welded over the additional
7.All exposed sheet comers must be rounded a minimum of 1" fasteners."Comers"include both outside and inside comers
(25 mm) that measure 75°-1050.Perimeter cap sheets may overlap
one another in the corner areas.Alternatively,the half sheet
C.Membrane Securement may be laid out in a"picture frame"manner,burying the
1.Roof membrane must be mechanically fastened in the fasteners under the half sheets.
side lap area to the roof deck with fasteners and plates 2.Roof membrane must be mechanically secured at the
of a type and spacing appropriate to the deck type and perimeter,at the base of internal walls and curbs,and at
as required by the Membrane Attachment Tables in this all penetrations with DRILL-TEC—Membrane Fasteners
Manual. and Plates at a 12" (305 mm)o.c.maximum spacing.
2.The metal plates must be placed within'/4"-1/4" Membrane may be heat welded to coated metal flanges.
(6 mm x 18 mm)of the membrane edge.Plates must not be Note:A minimum of 4 fasteners per penetration is required.
placed closer than (6 mm)to the membrane edge. E.Membrane Surface Preparation for Seaming
3.Fasteners must be installed to achieve the proper 1. Proper preparation of the area to be heat-welded is critical
embedment depth.Install fasteners vertical to the deck, to forming a good,long-lasting seam.Heat-welding uses
without lean or tilt.Do not over-or under-drive fasteners. the thermoplastic nature of the material to melt two
a.Use appropriate type and length of Drill-Tec-fastener pieces of material together,fusing it into a single piece.
and plates for structural deck type.See the Insulation In order to properly fuse these two discreet pieces together,
Attachment Table in the Roof Design Considerations the materials must be clean and dry,if not clean and dry,
Section of this Manual. contaminants will interfere with the weld and,generally,
b.Pre-drilling is required for concrete decks,and may be the result is a poor or false weld.
required for gypsum concrete and cementitious wood 2. Satisfactory heat welding requires that the membrane be
fiber decks. clean of dirt and contaminates,and free from dew,rain,
c.Install fasteners so that the plate is drawn down tightly and other sources of moisture.
to the membrane surface.Properly installed fasteners 3. Factory-fresh membrane typically will not require cleaning
will not allow the plate/termination bar to move prior to welding,provided that welding is performed
(underdriving),and will not cause wrinkling of the immediately after placement of the membrane.Membrane
membrane(overdriving). that has been exposed for a longer period of time will
4.Mechanically attach membrane with screws and plates to require additional cleaning methods,depending on the type
the roof deck at locations of deck slope changes in excess of of contamination present.
1:12. a.Any material rolled out and put into place needs to be
5.Membrane may be heat-welded to EverGuard®coated metal welded the same day,including welding of any detail
flanges. work.
a.Membrane must be secured to the roof deck within b.Membrane that has been exposed overnight or for more
6" (152 mm)of the base of walls and curbs,at the than 12 hours or has otherwise become contaminated,
perimeter,and all penetrations with Drill-Tec—Fasteners will require cleaning.
of a type and spacing in accordance with in-lap
attachment requirements,with a 12" (305 mm)o.c.
maximum spacing.
b.Alternatively,membrane maybe extended vertically 3"
(76 mm)up walls and curbs and secured to the wall/
curb substrate within 2" (51 mm)of the plane of the
roof.Use Drill-Tec—Fasteners and inverted termination
bar of type and spacing in accordance with in-lap
45
DESION CONSIDERATIONS &APPLICATINGUIDELINES-
MECHANIOLLY
1 HORN.
TPO PVC
F.Seam Cleaning Summary of Seam Cleaning Recommendations
1. Light Contamination:Membrane that has been exposed
for a few days or less to air-borne debris,foot traffic,or
dew or light precipitation can usually be cleaned with Type of Membrane Method Notes/1'i
ps
a cloth moistened with EverGuard®TPO Seam Cleaner Contamination Cleaner
or EverGuard®C1eanWeld-Conditioner(low VOC)for Light •TPO:EverGuard® ®Clean with cloth •Rinse area
TPO membranes.For PVC membranes,EverGuard®PVC TPO Seam Cleaner moistened with thoroughly with
Membrane Cleaner,MEK(methyl ethyl ketone)or acetone or EverGuard® membrane cleaner. clean water
can be used.Be sure to wait for cleaner to dry/flash-off
prior to welding. C1eanWeld— •Allow solvents to •Use white terry
Conditioner(low flash off. cloth;avoid use of
2. Dirt-Encrusted Contamination:Membrane that is VOC) industrial cleaning
dirt-encrusted will require the use of a low-residue cleaner •PVC:EverGuard® cloths.
such as Formula 409 and a mildly abrasive scrubbing pad PVC Membrane •Colored cloths can
to remove the dirt.Rinse area thoroughly with clean water Cleaner,MEK or transfer the dye
and allow to dry.This must be followed by cleaning with a
cloth moistened with(a)EverGuard®TPO Seam Cleaner or acetone in the cloth to the
EverGuard®CleanWeldTM Conditioner low VOC for TPO ® area to be welded
( ) � Dirt-Encrusted •TPO:EverGuard •Scrub with low
or(b)EverGuard®PVC Membrane Cleaner,MEK(methyl TPO Seam Cleaner residue cleaner and should not be
ethyl ketone)or acetone for PVC.Be sure to wait for cleaner or EverGuard® (409®)using a used.
to dry/flash-off prior to welding. •Do not over-use
C1eanWeIdTM mildly abrasive pad cloths;dispose of
3. Weather or Oxidized Contamination:Membrane Conditioner(low •Clean with cloth
that is weathered/oxidized will require the use of a low- VOC) moistened with cloths when dirty.
residue cleaner such as Formula 4090 and a mildly •PVC:EverGuard® membrane cleaner. •Use scrub brushes
abrasive scrubbing pad to remove the weathered/oxidized PVC Membrane •Allow solvents to sparingly as they
top surface layer.This must be followed by cleaning with a Cleaner,MEK or flash off. can damage the
cloth moistened with(a)EverGuard TPO Seam Cleaner or acetone membrane.
EverGuard®C1eanWeld—Conditioner(low VOC)for TPO, •Drying time for
or(b)EverGuard°PVC Membrane Cleaner,MEK(methyl Weather and/or •TpO:EverGuarde •Scrub with low cleaner increases
ethyl ketone)or acetone for PVC.Be sure to wait for cleaner Oxidized TPO Seam Cleaner residue cleaner 3-5 minutes for
to dry/flash-off prior to welding. or EverGuard® (409®)using a every 1°F drop in
4. Chemical Based Contamination:Membrane that is CleanWeld— mildly abrasive pad temperature.
contaminated with bonding adhesive,asphalt,flashing Conditioner pow •Clean with cloth
cement,grease and oil,and most other contaminants VOC) moistened with
usually cannot be cleaned sufficiently to allow an •PVC:EverGuard® membrane cleaner.
adequate heat weld to the membrane surface.Removal PVC Membrane •Allow solvents to
and replacement of the membrane is required in these Cleaner,MEK or flash off.
situations.
acetone
5. If Low-Rise Foam Adhesive is accidentally spilled on
the surface of the finished roof,use the following procedure Chemical Based .Not Recommended;•Remove and replace
to clean the roof: consult GAF membrane
a.Carefully scrape of the adhesive without rupturing the
underlying roof membrane.
b.After removal of adhesive,cover the affected area with G.Heat Welding Equipment
either EverGuard°smooth or fleece-back membrane. 1. Successful hot air welding requires the use of specialized,
properly maintained and adjusted equipment operated
by experienced personnel familiar with hot air welding
techniques.Achieving consistent welds is a function of
ensuring that the roofing membrane surface is clean
and prepared for heat welding,conducting test welds to
determine proper equipment settings,and evaluating weld
quality after welding has been completed.
2. Welding equipment consists of three main components:
power supply,hot air welder(either automatic or hand-
held),and extension cords.The newest automatic welding
equipment provides improved control of speed,temperature,
pressure,and membrane.The use of the latest model of
automatic welder is highly recommended.Older models
may not achieve consistent welds.Follow the equipment
manufacturer's recommendations regarding correct
equipment operation and adjustment.
46
DESIGN I 1 ° ' 1 : APPLICATION GUI
GUIDELINES-
' ' ATTACHED ROURNG SYSTEMS
°(I e PVC
a.Current generation automatic hot-air welder c.Clean welding nozzles on a daily basis with a wire brush.
(recommended) Nozzles have a tendency to retain membrane residue on
L Minimum Power Supply:220 volts,30 amps,10,000 their surfaces.This buildup of residue can interfere with
watt continuous welding if not removed.
b.Current generation hand-held hot-air welder d.Clean air filters on a weekly basis.Clogged air filters
(recommended) restrict air flow.This prevents the welding tool from
operating efficiently,and can cause the fan motor to
L Minimum Power Supply.110 volts,15 amps,2500 watt overheat.
continuous e.Heating elements are readily field-replaceable.Heating
c.Commercial Grade 10,000-watt voltage-controlled elements are vulnerable to both physical and thermal
generator(minimum) shock,particularly if the welder is shut off without first
i.THD(Total Harmonic Distortion)rating should be six being allowed to cool down.
(6)or less for quality welds I.Equipment Settings
ff.240v&120v Outlets 1. Setting up the hot air robotic welder properly is key to
iii.GFCI Line Cords having a properly installed roof and performing test welds
is one of the most important steps to ensure that you are
iv.Volt Meters obtaining a properly welded roof.Making appropriate
d.Extension Cords adjustments before you begin the final welding process
i.Automatic Welders-#10 wire with a standard plug assures that the correct combinations are achieved.
configuration.Maximum 100'(30.5 m)in length. 2. Test welds should be performed at the beginning of every
ii.Hand-Held Welders-#12 wire with a standard plug work period.
configuration.Maximum 100' (30.5 m)in length. a.Just before welding in the morning,
iii.For longer lengths,consult an electrician for line b.Upon returning from lunch in the afternoon,and
voltage drop.Heavier-gauge extension cords are likely c.When there's been a significant change in weather(e.g.,
to be required. air temperature,wind speed,cloud cover,etc.)
3. Stable power supply-Adequate wattage and consistent 3_ The correct speed and temperature settings for automatic
voltage is critical to obtaining consistent hot air welds and welders are determined by preparing test welds at various
to prevent damage to the welder.The use of a contractor- settings.The welds are tested by application of pressure
supplied portable generator is recommended.House- causing the seam to peel apart.A satisfactory weld will fail
supplied power is acceptable for hand welders only.Do not by exposing the scrim reinforcement.This is called a"film
connect to a power source that is: tearing bond."A deficient weld fails by separating between
a.Used for other equipment that cycles on and off. the two layers of the membrane.
b.Is subject to momentary disruptions or power surges. 4. Adjustments to Equipment Settings—many factors
will affect the settings:thicker membranes,lower air
c.Incapable of providing sufficient power. temperatures,and overcast skies will generally require
i.THD greater than six(6)may lead to fluctuations a slower speed than would be required with thinner
which may impact welding. membranes,higher air temperatures,and sunny skies.The
4.Silicone Hand Roller(used in conjunction with hand-held slower speed provides additional heat energy to compensate
welders) for heat-draining conditions.For initial automatic air
welder setting,use the formula below:
a.Ensure that the roller is in good condition.Rollers with a.Speed Formula:Start at(ambient temp/10)+2—FPM
rounded edges should be replaced. (Feet Per Minute)
Note:Outdated welding equipment and inadequate or fluctuating b.Example:70/10+2—9 FPM
electrical power are the most common causes of poor seam welds.
Note:This formula serves as an initial starting point.Adjustments
H.Equipment Maintenance may need to be made accordingly from there.New equipment may
1. Owner maintenance of welding equipment includes run faster and hotter.Remember,settings required for a good weld
keeping the equipment safe from physical abuse and will change based on equipment type,weather conditions and
damage from the elements,keeping the welding nozzles membrane thickness.
clean from membrane residue,keeping the air filters free
from clogging,and replacing heating elements when 5. Cautions&Warnings
needed. a.Do not touch the welding nozzle and heat shield,and
a.Follow the equipment manufacturer's recommendations avoid keeping unprotected skin in the flow of hot air.
regarding other aspects of equipment maintenance and The welding nozzle,heat shield,and hot air being
expelled from hot air welders is very hot and can result
repair(i.e.,motor brushes,switches,belts,etc.). in severe burns.
b.Store welding equipment in weather tight tool boxes. b.Any attempt to run a robotic welder at a speed greater
Tool boxes for automatic welders in particular should than 16 ft.(9.6 m)/min.may result in defective seam
be fitted with cushioning foam material to protect the welds.
welder during transit and hoisting operations.
47
DESIGN, I 1 ' ' I APPLICATION GUI
GUIDELINES-
' ' ATTACHED 13001FINO SYSTEMS
°O s PVC
c.Setting the speed of the welder too fast can also pose b.Do not use scrap material to create test welds
potential problems with the ability of the operator to c.Perform daily quality control including probing and
maintain control of the welder.This is particularly true checking seams at the end of the day
in reroofing or over uneven substrates.
d K.Adjustments to the Hot Air Robotic Welder Settings
.Robotic welders running too fast may not allow the
operator to monitor the weld width and ensure that 1. Many factors will affect the settings,including overcast
critical T-joint areas have been correctly creased. skies and lower air temperatures.This will generally require
e.The operator must keep in mind the relationship between a slower speed and lower heat settings.The slower speed
ambient temperature,automatic air welder speed,heat and heat provides the additional heat energy to compensate
setting and how much weight is on the machine in order for heat-draining conditions.
to achieve a film tearing bond(weld). 2. The correct speed and temperature settings for automatic
J.Test Welds welders are determined by preparing test welds at various
speed and heat settings.
1. Take 2 pieces of"bag fresh"EverGuard®membrane 3. Only make one change at a time and avoid changing heat
approximately 18" (457 mm)long and speed together.
2. Set your automatic welder's speed and heat.For full size 4. if you are welding at 1,148°F(620`C)and do not get a good
welders,such as the BAK LarOn,GAF suggests starting at weld,do not automatically adjust the speed because the
the following settings: temperature may be too high.Lowering the temperature or
a.Temperature between 800°F(427°C)and 1,148`F increasing speed may be a necessary adjustment.
(620'C).Speed 10-16 feet(3.05-4.88 m)per minute.New 5. if the weld is greater than 1.5"(38 mm),you may have the
equipment may run faster and hotter. temperature too high and this could lead to a failed weld
b.For an initial setting,use the formula below as a general over time.
guideline: 6. Having too much weight on the automatic hot-air welder
Speed Formula:Start at(ambient temp/10)+2=FPM(Feet Per combined with too high of a speed setting can potentially
Minute) cause wrinkle issues in the weld area.
Example Scenario:Start out by setting the speed at 10 FPM and L.Automatic Hot Air Welding of Field Seams
the temperature at 600OF(315'C)and do a test weld.Bump 1. Successful automatic welding is primarily a function of
temperature up 100°F(38°C)to 700OF(371`C)keeping same 10 proper machine adjustment and ensuring a consistent
FPM.Perform another test weld.Continue doing this in 100°F power supply.
(38°C)increments keeping speed the same until machine is maxed
out[typically 1,148T(620`C)]and find the weld window.Set up 2. Membrane MUST be cleaned and free from all dirt and
machine in the middle of the weld window. debris prior to hot air welding of seams.
Note:Remember,settings required for a good weld will change 3. Verify correct power supply voltage with a voltmeter.
based on equipment type,weather conditions and membrane 4. Determine proper welder speed and temperature settings by
thickness. performing the test weld procedure.
3. Weld the 18" (457 mm)pieces together and then allow the 5. Mark all locations where automatic welding starts and stops
membrane to cool for at least 10 minutes.Cut 1"(25 mm) to identify locations of possible weld discontinuities.These
wide strips across the welded material.The welds are tested areas should be carefully probed and repaired as required.
by application of pressure causing the seam to peel apart.
6. The weld must provide a maximum film-tearing bond of
4. An acceptable weld will fall by exposing the scrim 1.5"(38 mm)and a minimum 1"(25 mm)film-tearing
reinforcement.This is called a"film tearing bond"or bond.
"FTB".The film tearing bond will be between 1" (25 mm)
and 1.5" (38 mm)wide. 7. Membrane laps must be heat-welded together.All welds
5. A partial weld will fail by partially separating between the must be continuous,without voids or partial welds.Weldsmust be free of burns or scorch marks;however,seaming
two layers of the membrane. of PVC membrane should exhibit bleed-out when properly
6. An unacceptable weld will fail by separating between the welded.
two layers of the membrane.This is also known as a"cold 8. All reinforced membrane TPO and PVC field seams should
weld"or"false weld". be made using an automatic hot air welder.
7. During cooler temperatures,it is even more critical to 9. Attend to all T-joints by carefully pressing each joint down
perform test welds in the morning,after any extended break by silicone roller edge or other hard-edged tool immediately
such as lunch,or after significant change in weather(e.g., after the T-joint has emerged from the automatic welder.
air temperature,wind speed,cloud cover,etc.). a.60,70&80 mil TPO membrane T-joints require the
8. Hand welding during colder temperatures also needs to be installation of a heat-welded membrane cover patch.
adjusted.
b.80 mil PVC membrane T-joints require the installation
a.Perform test welds on membrane you will be using that of a heat-welded membrane cover patch.
day
48
DESIGN I 1 1 : APPLICATION GUIDELMS:
ATTACHEDMECHANICALLY R00FINGSYSTEMS
O&PVC
10. All cut edges of TPO reinforced membranes must be sealed 4. Probing MUST be conducted daily.
with EverGuard°TPO Cut Edge Sealant.PVC reinforced
membranes do not require cut edge sealant. 5. Initial probing should be done on hands and knees.
M.Hand-Held Welding of Seams 6. Subsequent probing may be completed with a cotter key
hand tool that can be affixed to standard extension handle,
1. Successful hand welding is a skill that involves individual which allows the tool to be used from a standing position.
technique,normally developed and refined over time. 7. Exercise care when handling and walking with the seam
Operator should be proficient in different nozzle probe to avoid injuries from the point end.
configurations.Correct selection of welder temperature and
nozzle width can have an effect on the quality of the hand 8. Continuous use of the probe will cause it to become
weld. sharper.Ensure that the point is blunted/rounded off at all
2. Membrane MUST be cleaned and free from all dirt and times.
debris prior to hand-welding. 9. Allow the seam to cool down at least 30 minutes or to
3. During basic hand welding,the hot air welder is held in ambient temperature before probing.Premature probing
one hand,and a hard silicone roller is typically held in can damage seams because the welds may still be warm.
the other hand.When hand welding with a roller,finger 10. Run the probing tool parallel to the edge of the seam
pressure is often used to place and tack the upper piece applying ample pressure at the base of the weld.Use
of membrane in position.However,a silicone roller must caution to avoid damaging the membrane surface with the
always be used for final welding.Tack welding and back- point of the probing tool.
tacking is not permitted in the field welding of seams. 11. When probing,extra attention must be given to all
4. The membrane must be heat-welded together using the membrane seam intersections,heat-welded seams above
"two-pass method".Weld from the interior on the first pass insulation joints and areas where the robotic welder stops
and finish the weld with the second pass. and starts again.
5. The welding nozzle is introduced between the two layers of 12. Mark all voids,open welds or cold-welds using a water-
membrane,and the silicone roller is rolled back and forth soluble marker or crayon so repairs can be made.
perpendicular to the nozzle mouth to press the membrane 13. Repair all voids,open welds or cold-welds routinely
together and accomplish the weld.The roller should throughout the day but no later than the end of each
remain flat to ensure proper compression. workday using a hand-welder.
6. All welds must be continuous,without voids or partial 14. To make a minor repair on a seam,use a T Joint Cover
welds.TPO welds must be free of burns or scorch marks; Patch,UN-55 Detailing Membrane,or the same material
however,seaming of PVC membrane should exhibit bleed- type being used for the field sheet.
out when properly welded.There should be no bleed out on
TPO. 15. If repairs are needed for an entire open seam,use
7. The ability to achieve satisfactory welds with the hot air reinforced membrane a minimum of 4" (102 mm)wide.
welder being held in either hand facilitates welding at Finish the detail by heat-welding T Joint Cover Patches at
each comer.Any damage caused to the field sheet(not in
various angles and in various situations. the seams)must be patched with reinforced membrane.
8. The weld must provide a maximum film-tearing bond of 16. All repaired seams should be probed after they have cooled
1.5" (38 mm)and a minimum 1" (25 mm)film-tearing completely to determine if the weld is acceptable.If the
bond. repaired seam is not acceptable,repair areas as necessary
9. Depending on the type of welding being performed,the until corrected.
temperature setting will vary,as will the width of the 17. Apply GAF EverGuard®Cut-Edge Sealant on all TPO
welding nozzle. reinforced membrane cut edges after seam probing is
N.Seam Probing completed.EverGuard®Cut-Edge Sealant is not required
1. Seam probing is the physical inspection of a hot air weld when using PVC.
area by running a suitable blunt probe along the length of
a seam with horizontal pressure applied into the bottom 3.12 Flashing Installation
edge of the weld.Seam probing checks the integrity of
the weld to help ensure a water-tight roofing system and Refer to the construction details in the Architectural Roofing
is critical to locating small skips in a welded lap.Seam Details Manual,available at www.gaf.com,which depict flashing
probing is NOT a replacement for conducting test welds. requirements for typically encountered conditions.
2. All hot air welded seams must be physically probed with a Install flashing materials as shown in the construction details.
blunt or dull cotter key puller hand tool(sharp points or A.General
edges must be filed down).
3. Contractors are responsible for initial robin of their 1.Flash all perimeter,curb,and penetration conditions with
P probing EverGuard coated metal,membrane flashing,and flashing
welds.Do NOT wait for a GAF Field Services Representative accessories as appropriate to the site condition.
to find issues with the welds during the roof inspection
after the roof is already completed.This could lead to more 2.All EverGuard®coated metal and membrane flashing
difficult and costly repairs requiring re-inspection by GAF. corners must be reinforced with pre-formed comers or
non-reinforced membrane.
49
DESIGN CON-SIGERATIORS s APPLICATION p
1 1 1 1 ° ' 1
TPO : ■
3.All flashing membranes and accessories are to be heat- 4.EverGuard°coated metal sections used for roof edging,base
welded using a hand welder.Refer to Section 3.11 M. flashing,and coping must be butted together with a'/a" (6
4.All cut edges of reinforced TPO must be sealed with mm)gap to allow for expansion and contraction.Heat weld
EverGuard®TPO Cut Edge Sealant. a 6" (152 mm)wide non-reinforced membrane strip to both
sides of the joint.A 2" (51 mm)wide aluminum tape can be
5.When using bonding adhesive,be sure to use adhesive installed over the joint as a bond-breaker,to prevent welding
specific to membrane and ambient weather conditions. in this area.
6.Minimum flashing height is 8" (203 mm). 5.EverGuard®coated metal used for sealant pans and scupper
7.The maximum distance from the wall that horizontal inserts,and comers of roof edging,base flashing,and
mechanical attachment should be installed is 6" (152 mm). coping,must be overlapped or provided with separate metal
When you must go past 6" (152 rum),move the attachment pieces to create a continuous flange condition,and pop-
to the vertical substrate. riveted securely.PVC and TPO coated metal flashings must
be stripped in using 6" (152 mm)membranes.
8.Alternatively,RhinoBond®plates and fasteners can be used 6.EverGuard°coated metal base fleshings must be provided
where applicable for base termination on a Mechanically
Attached system.Place plates and fasteners out from wall a with min.4" (102 rum)wide flanges screwed to wood
minimum 4.5"(114 mm)to a maximum of 6" (152 mm) milers.EverGuard coated metal base flashings must be
with spacing of 12" (305 mm),which allows the field sheet formed with a 1"(25 mm)cant.
to be used as a wall flashing. 7.Provide a 1/2" (13 mm)hem for all exposed metal edges
9.Installation of EverGuard®PVC flashing membrane to provide corrosion protection and edge reinforcement for
over asphalt-based substrates must have a polymat slip sheet improved durability.
or approved insulation boards,metal,wood,etc.,under 8.EverGuard®coated metal flashings are attached to wood
the PVC flashing membrane. nailers or otherwise mechanically attached to the roof
10.EverGuard Extreme°membrane flashings should be of same deck,or to the wall or curb substrate,in accordance with
type,thickness,and color as the roofing membrane. construction detail requirements.
11.For TPO or PVC membranes installed over granulated 9.When installing EverGuard®coated metal on walls or curbs
modified bitumen flashings,a polymat separator sheet must that completely cover the existing flashing,the flashing does
be installed for dry-hung flashings.In adhered applications, not need to be removed provided that it is in good condition
a barrier board must be installed. and tightly adhered.
12.When using EverGuard®TPO or PVC adhesives,use any one C.Adhered Reinforced Membrane Flashing-Smooth Surface
of the following substrates:polyisocyanurate insulation and 1.The thickness of the flashing membrane must be the same
high density(without foil facer);high density fiberboard as the thickness and type of the roofing membrane.
roof insulation;gypsum roof board;cured structural concrete 2.Apply the adhesive only when the adhesive,substrate,
(without curing and sealing compound present);untreated membrane,and outside temperatures are above 40°F
OSB;untreated CDX plywood;Type X gypsum board;and
dry sound masonry(without curing and sealing compounds ( and rising.Application temperatures above
present). 507(10°C)are recommended to allow easier
adhesive application.
13.DensGlass®Gold gypsum board is NOT to be used as a
substrate for adhered attachment on parapet walls,according 3.Porous substrates may require double application of
to the manufacturer. adhesive.
14.Use fire-treated plywood/wood for parapet walls only if 4.Application of bonding adhesive
covered with an approved gypsum board for adhered a.Apply bonding adhesive as per application instructions
EverGuard°membranes only. on product container equally to both the substrate and
B.EverGuard°Coated Metal Flashing the underside of the flashing membrane.
1.EverGuard®coated metal flashing allows much of the 5.Carefully position the membrane flashing prior to
metal-work used in typical roofing applications to benefit application to avoid wrinkles and buckles.
from the security of heat-welded membrane seaming,with a a.Please note that solvent-based adhesive must be allowed
corresponding reduction in required metalwork maintenance to dry until tacky to the touch before mating flashing
during the life of the roofing system. membrane.Water-based adhesive must be allowed to dry
2.EverGuard®coated metal must be formed in accordance completely to the touch.Typically,the flashing should
with construction details.Where required,EverGuard® be installed within one hour of applying the water-based
coated metal should be designed in accordance with adhesive.However,this may vary depending on ambient
SMACNA details,the applicable building code and tested for temperature conditions.
resistance in accordance with the applicable ANSI/SPRI/FM 6.Heat-weld all laps in EverGuard®smooth reinforced
4435/ES-1,"Wind Design Standard for Edge Systems Used flashing membrane in accordance with heat-welding
with Low Slope Roofing Systems." guidelines.
3.The use of EverGuard Extreme®TPO Coated Metal Flashing 7.For extended-length guarantees,separate counter flashing
is required on EverGuard Extreme®Systems. or cap flashing is required;exposed termination bars are not
acceptable.
50
DESIGN 1 1 RATIONS APPLICATION,GUIDELINES:
ATTACHEDMECHANICALLY ROOFIRG
TPO& .
8.Corner Curb Wraps,consisting of a pre-formed combination 3.Maximum flashing height is 30" (762 mm)without
comer and flashing pieces that are 12" (305 mm)in height adhesives for sheets up to 10' (3 m)wide unless incremental
and can be ordered in various lengths.These flashings attachment is used.For sheets up to 12' (3.5 m)wide,
may be dry hung or adhered in place.For adhered flashing fleshings may be installed up to 36" (914 mm)unless
applications,apply adhesive to both the underside of incremental attachment is used.
the substrate and the flashing membrane to adhere the 4.For extended-length guarantees,a counter flashing must be
membrane. used.Exposed termination bars are not acceptable.
9.Never use any TPO Primer or United Coatings®Surface Seal F.Non-reinforced Membrane Flashing
SB Primer to prime walls to accept adhesives;only use the
adhesive you are using as a primer for the roof to prime the 1.Non-reinforced membrane can be used as a field-fabricated
walls. penetration/reinforcement flashing only where pre-formed
D.Adhered Reinforced Membrane Flashing-Fleece-Back corners and pipe boots cannot be properly installed.
1.Apply bonding adhesive or approved low-rise foam adhesive 2.Penetration flashing constructed of non-reinforced
to the substrate per application instructions on product membrane is typically installed in two sections,a vertical
container. piece that extends up the penetration and a horizontal piece
that extends onto the roofing membrane.The two pieces are
2.The bonding adhesive must remain wet to the touch for overlapped and heat welded together.
one-surface applications.The use of solvent-based adhesive 3.The non-reinforced vertical membrane flashing may be
is not recommended. adhered to the penetration surface.Refer to section 3.12 C
3.Apply the adhesive or low-rise foam only when the outside for application instructions.
temperature is above 40OF(4.4°C)and rising.Application 4.All round and square pipe type flashings require EverGuard®
temperatures above 50OF(10°C)are recommended to allow F1exSeal—Caulk Grade or EverGuard®Water-Block between
easier adhesive application. the penetration and the membrane.Add and tighten stainless
4.When installing fleece-back membranes to a vertical surface, steel band and seal top of membrane with EverGuard®
the material should be rolled in with hand rollers and FlexSeal'"Caulk Grade.
should have top edge fastening and termination installed
immediately to avoid slippage.For best results,flashings 5.T-joint Patches
may need to be rolled in several times with a hand-held, a.T-joint patches are to be a minimum 4" (102 mm)
silicone roller. in size and made of non-reinforced material.They
5.Non-selvage edge laps in EverGuard®Fleece-Back and must be completely hot-air welded over the T-joint
flashing membrane are made by butting adjacent sheets at the intersection of the three pieces of reinforced
and heat welding an 8"(203 mm)wide flashing strip of membrane.During installation,care must be taken
EverGuard®flashing membrane over the joint. to"crease-in"the unsupported membrane at the three
step-off locations.
6.Overlap roof membrane a minimum of 3" (76 mm)for b.Pre-fabricated or field-fabricated non-reinforced
end laps of EverGuard®PVC and TPO membranes.For membranes that match the membrane being used in the
EverGuard TPO Fleece-Back membranes use an 8" (203 field of the roof are acceptable for T-oints.
mm)wide EverGuard®TPO reinforced membrane flashing p l
strip over the joints.For PVC,cut a flashing strip of smooth c.T-joint patches are required on 60,70 and 80 mil TPO
PVC fleece-back membrane of the same thickness as the field and 80 mil PVC only.
sheet and use as the flashing strip. G.Roof Edging
7.All TPO cut edge on reinforced membranes must be sealed 1.TPO roof edge flashing is applicable for both gravel stop/drip
with EverGuard TPO Cut Edge Sealant. edge conditions,as well as exterior edges of parapet walls.
8.Never use any TPO Primer or United Coatings®Surface Seal a.For guarantees up to 20 yews,use EverGuard®Cover
SB Primer to prime walls to accept adhesives;only use the Tape HW,or EverGuard®Cover Tape with all edges
adhesive you are using as a primer for the roof to prime the sealed with EverGuard°Cut Edge Sealant,EverGuard®
walls. TPO Coated Metal,or any of the other EverGuard®pre-
9.For extended-length guarantees,a counter flashing must be fabricated extruded aluminum fascia systems.
used.Exposed termination bars are not acceptable. b.For extended-length guarantees(greater than 20 years),
E.Loose Reinforced Membrane Flashing use weldable metal,pre-fabricated extruded aluminum
1.Carefully position the EverGuard°smooth or fleece-back fascia systems,or EverGuard Extreme®Cover Tape HW
reinforced flashing membrane prior to application to avoid only.
wrinkles and buckles. 2.Where required,metal roof edging should be designed in
2.All laps in EverGuard°smooth reinforced flashing accordance with the applicable building code and tested for
membrane must be heat-welded in accordance with heat- resistance in accordance to the applicable ANSI/SPRI/FM
welding guidelines.All fleece-back membrane flashings with 4435/ES-1,"Wind Design Standard for Edge Systems Used
non-selvage edges must be stripped in using 8" (203 mm) with Low Slope Roofing Systems."When not required,refer
wide flashing strips.
to Items 3 and 4.
51
DESIGN 1 1 ' ' 1 APPLICATION GUI
MECHANICALLY ATTACHED ROOFING
.O PVC
3.Flash roof edges with EverGuard®coated metal flanged 2.Secure membrane flashing at the top horizontal edge
edging with minimum 3"(76 mm)wide flange nailed 4" with a termination bar.Apply Flex<Seal—Caulk Grade
(102 mm)o.c.or Drill-Tec-screws 12"(305 mm)o.c.into Caulking between the wall surface and membrane flashing
wood nailers with a reinforced flashing strip welded to the underneath all termination bars.Exposed termination bars
coated metal and to the field of the roof. must be mechanically fastened 6" (152 mm)o.c(20-year
a.For TPO coated metal,heat weld an 8" (203 mm)TPO max.guarantee);termination bars that are counter flashed
reinforced flashing strip. must be fastened 6"(152 mm)o.c.for extended-length
b.For EverGuard°PVC membranes,an 8" (203 mm) guarantee(s).
reinforced heat-weldable flashing strip must be used. 3.Roof membrane must be mechanically attached along the
Cover tape products are not acceptable for use with PVC base of walls that are flashed with membrane flashing.
membranes. Attach with screws and plates/termination bar.Use a
fastener spacing in accordance with in-lap attachment
4.Metal roof edging must be provided with a continuous requirements,with a maximum 12" (305 mm)o.c.spacing.
metal hook strip to secure the lower fascia edge.Secure the 4.Metal counter(lashings with adhered or dry hung
continuous hook strip to the building a maximum of 4" membrane wall fleshings are required on 20-year guarantees
(102 mm)o.c. or longer.(They are not required for guarantees of less than
5.Alternatively,flash roof edges with a two-piece snap-on fascia 20 years.)All termination bars,either exposed or covered,
system,adhering roof membrane to metal cant with bonding must be sealed with F1exSeal—Caulk Grade caulking or
adhesive and face-nalling the membrane 8"(203 mm)o.c. EverGuard®Water-Block
prior to installing the snap-on fascia.. 5.Flash wall scuppers with a scupper insert of EverGuard°
6.For guarantee lengths up to 20-years,metal edging may be coated metal that is mechanically attached to the wall and
flashed using EverGuard®TPO Cover Tape after priming integrated as part of the wall flashing.Refer to Scupper
both the metal and the TPO membrane. section for other detail options.
a.EverGuard°TPO Cover Tape is a 6" (152 mm)wide, 6.Where required,metal cap flashings should be designed in
non-reinforced TPO membrane backed with a butyl accordance with the applicable building code and tested for
tape adhesive.Clean the entire surface to be covered, resistance in accordance with the applicable ANSI/SPRI/FM
metal and roof membrane,with soap and water,and dry 4435/ES-1,"Wind Design Standard for Edge Systems Used
entire area.Wipe area to be primed with a damp wipe of with Low Slope Roofing Systems."
EverGuard®TPO Cleaner.
7.Maximum flashing height without intermediate fastening:
b.Prime surfaces mating with the butyl tape with •30"(762 mm)—Loose-Applied Flashing
EverGuardO TPO Primer,keeping primer only on the
surface receiving the tape.After primer has flashed off, •60"(1.7 m)—Adhered Flashing
pull release paper on the back of the tape,exposing the 8.Metal cap fleshings must have continuous cleats or be
butyl adhesive,and mate the two surfaces.Roll the tape face-fastened 12"(305 mm)o.c.on both the inside and
portion of the cover strip at a 45-degree angle to ensure outside of the walls.
a good bond.Seal all end laps,miters,and T-joint
intersections with EverGuard®TPO Cut Edge Sealant 6" I.Round and Square Tube Penetrations
(152 mm)past the intersection in all directions. 1.Four options are available for penetration flashings:stepped
7.For extended-length guarantees,use EverGuard Extreme® pipe boots;split pipe boots;square tube wraps;and field
TPO Cover Tape Heat Weld.This is a hybrid cover tape fabrication with unreinforced membrane and target.
consisting of 6"(152 mm)of.045 reinforced TPO 2.All flashings require the installation of a stainless steel
membrane with 3"(76 mm)butyl tape on half of the back draw band around the top of the flashing.Install
surface,Refer to Step 6(above)and follow procedures for EverGuard®Water-Block on the inside top of the flashing
the butyl tape preparation and installation.Then heat weld and add the draw band with F1exSeal—Caulk Grade
the cover tape to the field membrane with a 2"(51 mm) caulking around the top of the flashing.
hand welder or automatic heat welder,to all membrane-to-
membrane surfaces. 3.Roof membrane must be mechanically attached at the
base of each penetration with screws and plates a maximum
Note:Any overlap ends must be stripped in with flashing detail of 12"(305 mm)o.c.,with a minimum of four fasteners
membrane and welded completely to finish the detail.EverGuard® per penetration.
TPO Cut Edge Sealant must be installed on all edges of the HW
Flashing Strip. J.Irregularly Shaped Penetrations
8.Flash roof edge scuppers with a scupper insert of EverGuard® 1.Metal Sealant Pans/Pre-formed TPO or PVC Accessories,
coated metal or an EverGuard°pre-fabricated coated metal a.Flash irregularly shaped penetrations with flanged
scupper that is mechanically attached to the roof edge and sealant pans formed of EverGuard®coated metal,
integrated as part of the metal edging. secured to the deck through the roof membrane with
H.Parapet and Building Walls screws 6"(152 mm)o.c.,a minimum of two per side.
1.There are 3 options for flashing parapet and building walls: b.Strip in metal flanges with 8" (203 rnrn)wide membrane
adhered membrane fleshings,metal fleshings,and loose- flashing strips and vertical pop riveted seams with 4"
hung flashings. (102 mm)unreinforced membrane.
52
1 TALLY ATTACHEG ROOFING
•' &.PVG
c.Prime inside of pocket with TPO primer.Priming is not 3.Roof membrane must be mechanically attached along the
required for PVC membranes.Fill sealant pans with non- base of curbs and ducts that are flashed with membrane
shrink quick-set grout.Top off sealant pans with a 2" (51 flashing with screws and plates/termination bar at 12"
mm)minimum thickness of an approved EverGuard® (305 mm)o.c.
Sealant.If using F1exSeal—Caulk Grade Sealant,after 4.Metal counter flashingmust be used for extended guarantee
priming,increase the grout to within 1/2"(13 mm)from lengths.All terminatio bars must be sealed with 1exSeal-
the top of the pocket,and install the F1exSeal—to the Caulk Grade Sealant or EverGuard®Water-Block.
very top or overfill the pocket.
d.Installation of pre-formed PVC sealant pans requires L.Expansion Joints
the flange of the PVC sealant pan to be fastened with 1.Install expansion joint covers at all flat type and raised
a minimum of 4 fasteners per penetration.A PVC curb-type expansion joints.There are currently three types
membrane target is installed around the base of the of expansion joints approved for EverGuard®Systems.There
sealant pan over the flanges of the PVC sealant pan and are two prefabricated expansion joints,one for TPO and one
heat welded to the flanges.Install the fasteners near for PVC.TPO and PVC can also be field fabricated to meet
the outside edge of the flanges to allow for proper heat expansion joint needs.
welding of the target.The outside edge of the target 2.Roof membrane must be mechanically attached along the
membrane is heat welded to the field membrane. base of raised curb expansion joints with screws and plates a
e.Installation of pre-formed TPO sealant pans requires minimum of 12" (305 mm)o.c.
field membrane securement around the penetration.A 3.Expansion joint bellows must be twice the width of the
minimum of four(4)system-appropriate screws and expansion joint opening to allow for proper expansion/
plates are required around the penetration.A membrane contraction.
target must be installed prior to the installation of the
TPO sealant pan if the location of the plates does not 4.Metal fastening strip on prefabricated expansion joints must
allow for a continuous 2" (51 mm)weld of the TPO be set in F1exSeal—Caulk Grade Sealant or EverGuard°
sealant pan flange.Properly heat weld the flange of TPO Water-Block and secured with EverGuard°Drill-Tec—
sealant pan to the field/target membrane. fasteners and neoprene washers fastened 6" (152 mm)o.c.
f.If a preformed sealant pan is cut to install around the M.Roof Drains
penetration,the cut must be stripped in with a minimum 1.Roof drains must be fitted with compression clamping
4" (102 mm)wide non-reinforced membrane.The non- rings and strainer baskets.Both traditional cast iron and
reinforced strip-in membrane must extend a minimum aluminum drains,as well as retrofit-type cast aluminum
of 2"(51 nun)beyond the outside edge of the sealant pan and molded plastic drains,are acceptable.
flange and be fully welded. 2.Roof drains must be provided with a min.36"x 36"(914
g.EverGuard®TPO reinforced targets must be sealed with mm x 914 mm)sumped area if possible.Slope of tapered
EverGuard®TPO Cut Edge Sealant. insulation within the sumped area must not exceed 4:12.
2.MajorSeal—Liquid Flashing is only to be used when 3.Extend the roofing membrane over the drain opening.
EverGuard®TPO flashing accessories and standard details Locate the drain and cut a hole in the roofing membrane
cannot be used.You must contact your GAF Field Services directly over the drain opening.Provide a 1/2" (13 mm)
Area Manager to assess suitability prior to use. membrane flap extending past the drain flange into the
a.Not suitable for areas around drains,scuppers,or areas drain opening.Punch holes through the roofing membrane
that pond water. at drain bolt locations.
b.20-year maximum guarantee.Not eligible for extended- 4.For cast iron and aluminum drains,the roofing membrane
length guarantee coverage. must be set in a full bed of F1exSeal—Caulk Grade Sealant
c.Cannot be used with PVC. or EverGuard®Water-Block on the drain flange prior to
securing with the compression clamping ring.
K.Curbs 5.For fleece-back roof membrane applications,the fleece-back
1.Flashing can be done two different ways,either with adhesive membrane is cut just short of the drain flange.A separate
applied to the membrane and substrate,or loose-applied up smooth reinforced membrane drain flashing sheet is heat
to 30" (762 mm)high. welded to the roofing membrane and set into the drain
r
above in a full bed of F1exSeal—Caulk Grade Sealant or
2.Secure membrane flashing the top edge with a EverGuard®Water-Block and secured as above.EverGuard®
F1exSealT"Caulk Grade sealant or EverGuard Water-Block
termination bar,flat stock, counter Gflashing.Apply TPO Cut Edge Sealant must be used on TPO drain targets.
uar
between the curb surface and membrane flashing.Exposed 6.Do NOT locate lap seams within the sump area.Where lap
termination bars must be mechanically fastened 6"(152 seams must be located within the sump area,a separate
mm)o.c.;termination bars that are counter flashed must smooth reinforced membrane drain flashing a minimum of
be fastened 12" (305 nun)o.c.If wood is present at the top 9" (229 mm)larger than the sump area must be installed.
of the curb,install ring shank nails 12" (305 mm)o.c.after The membrane flashing must be heat welded to the roof
wrapping the membrane to the inside of the curb.This can membrane.Alternatively,if the seam does not run under the
be used in lieu of the termination bar if nailed on the top or clamping ring,it can be covered with a 6" (152 mm)wide
preferably,the inside of the curb. reinforced membrane strip heat welded to the membrane.
7.Tighten the drain compression clamping ring in place.
53
DMIGN ONSIDERATIONS,& APPLICATION"GUIDELINES:
MECHANICALLYATTACHED ROOFING
e, PVC
N.Retrofit Drain Inserts P.Heater Stacks
1.Drain inserts must only be used in the event the original 1.The temperature of any heater stack that comes into contact
drain is damaged and cannot be repaired without complete with the EverGuard®membrane or flashing should not
replacement of the drain.Drain inserts will reduce water exceed 160°F(71°C)for EverGuard°TPO membrane,
flow.Consult the design professional to ensure adequate 190°F(88°C)for Everguard TPO Extreme®or 140OF(°C)
drainage is maintained. for EverGuard°PVC membrane.
2.Clean the drain lines a minimum of 24"(610 mm)where 2.Field-fabricated two-piece membrane flashings of
the drain insert is to be installed Failure to clear this section EverGuard®non-reinforced flashing are typically installed
of drain he can prevent the sealing of the drain and at heater stacks.EverGuard®TPO and PVC have cone-
degrade the performance of the drain seal and is required. type prefabricated pipe flashing that may work in these
3.All drains must be provided with a drain sump of 36"(914 applications.
mm)x 36"(914 mm)minimum dimension,if possible. 3.Heat stacks must be equipped with either cone-shaped or
Fasteners must be installed 12" (305 mm)o.c.or a vertical tube-type flashing sleeves so that the membrane
minimum of 4 per penetration. flashing is not directly in contact with the heater stack.
4.The drain insert is installed on top of the roofing membrane 4.Mechanically attach the roof membrane to the structural
and is secured to the roof deck 6" (152 mm)o.c.with Drill- deck with Drill-Tec-screws and plates around the
Tec-screws. penetration base prior to flashing installation.
5.A separate reinforced membrane drain flashing sheet is heat 5.All stack flashings must be secured at their top edge by a
welded to the roofing membrane.The drain flashing sheet is stainless-steel clamping band over FlexSeal—Caulk Grade
heat welded to a compatible drain flange. Sealant or EverGuard®Water-Block Seal the detail with
6.Install the drain clamping ring if applicable. FlexSeal—Caulk Grade Sealant.
7.All drains must be provided with a strainer basket. 6.Field-fabricated membrane flashings may be adhered to the
flashing sleeve with EverGuard adhesives.Make sure to
8.Roof drains must be open and functioning. use the correct bonding adhesive with the membrane being
0.Scuppers installed.
1.EverGuard®coated metal roof edge scuppers must be Q.Wood Support Blocking
provided with a min.4" (102 mm)wide flange nailed 1.Wood support blocking,typically 4" (102 mm)x 4" (102
to wood nailers,with hemmed edges and secured mm),is usually installed under light-duty or temporary
with continuous clips in accordance with the gravel roof-mounted equipment,such as electrical conduit,gas
stop assembly. lines,and condensation and drain lines.
2.EverGuard®coated metal wall scuppers must be provided 2.Install wood support blocking over a protective layer of
with 4" (102 mm)wide flanges,with additional comer EverGuard°TPO walkway rolls or PVC walkway pads.
pieces pop-riveted to the flanges to create a continuous Place wood blocking on oversized slip sheet,fold two sides
flange.All flange corners must be rounded. vertically,and fasten with roofing nails into the blocking.
3.Install wall scuppers over the roof and flashing membrane 3.If using pre-fabricated pipe stands with rubber-like bases,no
and secure to the roof deck/wall with Drill-Tec—fasteners 6" slip sheet is required on TPO membranes.Do not use on PVC
(152 mm)o.c.,a minimum of 2 fasteners per side. membranes.
4.All corners must be reinforced with EverGuard®PVC or R.Satellite Dish Support Bases
EverGuard°TPO Universal Corners or field fabricated from
EverGuard®non-reinforced materials. 1.Install non-penetrating satellite dish support bases over a
protective layer of TPO/PVC membrane.
5.Strip in scupper with flashing membrane target sheet. S.Lightning Suppression
6.Alternatively,a wall scupper box may be field flashed 1.Secure lightning suppression cable to the roof surface by
using non-reinforced flashing membrane heat welded means of 2" (51 mm)wide EverGuard°PVC or EverGuard®
to membrane on the wall face and roof deck Be sure TPO Flashing membrane strips heat-welded to the roof
that all corners are reinforced with universal corners or
non-reinforced EverGuard®material.Fully adhere to the membrane.
scupper box and terminate on the outside wall face with 2.Secure lightning rod to reinforced EverGuard®membrane
a termination bar and FlexSeal-Caulk Grade Sealant or patch that is heat welded in place.Securement should not
EverGuard®Water-Block. penetrate the roof membrane.
7.EverGuard°TPO has prefabricated scuppers in standard and
custom sizes available.Consult your Territory Manager or
local distributor for details. 3.13 Traffic Protection
8.Scuppers may be set in a bed of FlexSeal-Caulk Grade A Walkway rolls or pads should be installed at all roof access
Caulking or EverGuard°Water-Block for additional locations,including ladders,hatchways,stairs,and doors.Install
resistance to movement. walkway rolls or pads at other designated locations,including
roof-mounted equipment work locations and areas of repeated
rooftop traffic.
54
POSIGN CONSIDE-RARONS & APPLICATION GUI
MECHANICALLY ATTAGHER ROOFING 0
TPO PVC
B.Walkway rolls or pads must be spaced 6"(152 mm)to allow for 3.17 Maintenance
drainage.Edges of walkway rolls or pads must be placed 6" (152 A.Upon completion of the roofing system,the owner should
mm)from any seam. establish a semi-yearly inspection and maintenance program in
C.Heat-weld walkway rolls or pads to the roof membrane surface accordance with standard good roofing practice and guarantee
continuously around the walkway roll or pad perimeter. requirements.
B.Repair of any damage or defect should follow GAF
3.14 Temporary Closures recommendations.For further information,contact GAF.
A.The roofing installation must be made watertight at the end of
each day's activity to prevent water infiltration into the completed
roofing system installation.
B.Complete all flashings and terminations as the roofing
installation progresses.
C.Remove all temporary night-seal materials prior to continuing
with the roof installation and dispose of properly.
3.15 Field Quality Control
A.Field quality control should be performed in accordance with
NRCA's Quality Control and Quality-assurance Guidelines for
the Application of Membrane Roof Systems.
B.Inspect completed roof sections on a daily basis.It is the
contractor's responsibility to probe all heat-welded seams and
perform an adequate number of seam cuts to ascertain seam
consistency.
C.Immediately correct all defects,irregularities,and deficiencies
identified during inspections.All voids that are found must be
patched over per specifications.Do NOT re-weld seam voids more
than 24 hours after initial welding of the seam.
D.Remedial work must be performed with like materials and in a
manner consistent with the balance of the roofing installation so
as to minimize the number of repair patches.
3.16 Clean-up
A.Remove bonding adhesive,bituminous markings,and other
contaminants from finished surfaces.In areas where other
finished surfaces are soiled by asphalt or any other source
of soiling caused by work of this or other sections,consult
manufacturer of surfaces for cleaning advice and conform to
those instructions.
B.Cut and remove any sheet membrane contaminated with solvent-
based adhesive,bituminous markings,and other contaminants
from finished surface.
C.Cleaning the adjacent area with an all-purpose cleaner,then
rinse off soapy residue.
D.Apply EverGuard®TPO Seam Cleaner or EverGuard®
CleanWeld—Conditioner for TPO membrane and EverGuard®
PVC Membrane Conditioner,MEK(methyl ethyl ketone)or
acetone for PVC membrane.Refer to Section 3.11,F.
E.Complete the repair by installing a patch of like material to
specific system requirements.
55
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