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i 1 1 � c c � � ICC-ES Evaluation Report ESR-1601* Reissued September 1, 2012 This report is subject to renewal November 1, 2014. www.icc-es.orq � (800)423-6587 � (562)699-0543 A Subsidiary of the /niemational Code Council� DIVISION:07 00 00—THERMAL AND MOISTURE instructions. The manufacturers published installation PROTECTION instructions must be available at the jobsite at all times Section:07 30 05--Roofing Felt and Underiayment during installation. REPORT HOLDER: Prior to appliqtion of the underlayment, the roof deck surtace must be free of frost,dust and dirt,loose nails,and ALPHA PROTECH ENGINEERED PRODUCTS,INC. ather protrusions.Damaged sheathing must be replaced. 301 SOUTH BLANCHARD STREET Installation of an approved roof covering can proceed VALDOSTA,GEORGIA 31601 immediately following application of the roofing (229)242-1931 underlayment. The underlayment is to be covered by the www.alohaprotech.com roof covering within the time set forth in the underlayment manufacturers published installation instructions. For EVALUATION SUBJECT: reroofing appliptions, the same procedures apply after removal of the existing roof covering and roofing felts to REXTM' SYNFELT, REXTREME AND TECHNOPLY expose the roof dedc. SYNTHETIC ROOF UNDERLAYMENTS 4.2 Applications: 1.0 EVALUATION SCOPE The underlayment must be installed in accordance with Compliance with the following codes: Chapter 15 of the IBC or Chapter 9 of the IRC, and must be laid printed side up horizontally (parallel to the eave) ■ 2012,2009 and 20061nfemationa!Building Code�(IBC) starting at the lower edge of the roof, with 3-inch(76 mm) ■ 2012,2009 and 2006/nfemationa!Residenfial Code� horizontal (head) laps and 6-inch (152 mm) vertical (end) (IRC) laps. Prope�ties evaluated: The underlayment must be fastened to the roof deck ■ Physical properties using minimum No. 12 gage [0.109-inch (2.77 mm)] minimum shank diameter, coROSion-resistant roofing nails ■ Fire classification having minimum 1-inch-diameter (25.4 mm) plastic caps. 2.0 USES The fasteners must be spaced 8 inches (203 mm) on center at vertical and hor¢ontal laps, and 24 inc�es REX�" SynFelt, REXtreme and TECHNOpIy synthetic (610 mm) on center vertically and horizontally in a roofing underlayments are altematives to the ASTM D226, staggered pattern in the field of the underlayment, except Type I and Type II, roofing underlayment specified in in areas subject to high winds where underlayment Chapter 15 of the IBC and Chapter 9 of the IRC. The fastening must comply with high wind attachment underlayments are also used as components of classified requirements specified in IBC Section 1507 or IRC Section roofing assemblies when installed as described in this R905. Fasteners must be long enough to penetrate into the report. sheathing a minimum of 3/4 inch (19.i mm) or through the 3.0 DESCRIPTION sheathing, whichever is less. When battens are installed over the unde�layment, the undeMayment need only be The roof underlayments consist of a woven polypropylene preliminarily attached pending attachment of the battens or fabric with a polypropylene coating on each side. The countefiattens. REXTM' SynFelt, REXtreme and TECHNOpIy synthetic underlayments have nominal weights, respedively, of 2.56 A single layer of minimum 24-inch-wide (610 mm) pounds per 100 square feet (125 g/m2), 2.97 pounds per underlayment must be installed and centered vertically at 100 square feet (145 g/mZ), and 2.05 pounds per 100 all valleys before underlayment in the field, and at atl hips square fest(100 g/m2),and are produced in rolls of various and ridges after underlayment in the field. sizes. Where the slope is from 2:12(17 percent slope)up to 4.12 4.0 DESIGN AND INSTALLATION (33 percent slope) and the roof is to be covered with 4.1 General: asphalt shingles, or where the slope is from 2�/Z.12 (21 percent slope) up to 4:12 (33 percent slope) and the Installation must comply with the applicable code, this roof is to be covered with concrete or Gay roof 61es, the report and the manufacturer's published installation underlayment must be horizontally lapped 24 inches 'Revised November 2012 lCGES Evaluanon Reports are nor to be construed as represen(rng aesthetics or arry olher attrrbwes nof specifically addresse�l rwr are rhey 1n be cansirued � as an endorsemen!of the svbject of the report or a recommenalation for its use.There is no warranry by ICC Evalualion Service,LLC,etpress or impliecl,as � ro orry findrng or other marrer in this report,or as to any praiacr covered by�he nport. �� COpyright�2012 Page 1 of 2