16-17040 - Laserfiche WebLink

Browse Search

( F � ` ,�%' • - � ' 1 `,�My;�� g C�ulf � �� :� r��4�� M�:r�•;� � �. .. .� -__;>,..�?;:��z.�x.�--�-� - Installation of Panels Roof Pitch Gulf Coast Supply's engineering requires a anninin�aum pitch of 2/12 for wood frame constructiau,and 11�112 for steel frame,to ensure gzoper water drainage. A 2112 pitch means that the zninitnum raof slope required for all panels is 2 inches of vertical rise per horizontal foot. Butyl sealant with lap screws is required on all side panel laps an roofs with Iess than a A-112 pitch to prevent water from siphoning over the ribs (see Figure 7 on page 6),but is optianal on roofs with a 4/12 pitch or greater. Cansnit our representative for recammendations for your particular roof piEch, and abaut roofing options if you have less than a 2/12 pitch. Roof�reparation Oil-canning is a wave-like,rippled appearance extending up the length of the panel after it has been installed on the raof. Any irregularities in the raof,including uneven plywoad jaints, warped plywaod, uneven trussesa poar application of underlayment, the use of button caps with felt paper,etc., can promote oil-canning. Care shauid be taken to pravide a flat,uni£arm surface on which to attach the panels. See page 8 for mare details. Roof Application Panel installation should begin at the gable end of�the roof opposite the grevailing rain-bearing wind{this will pravide added assurance against wind-driven rain being forced under the Iaps). Measure one full panel width in (approx. 38")from the raof edge. At this point chalk a line from ridge ta eave (avoid getting chaik on paneis—it may discolar them!}. Place the leading edge of the first panel along this line. It is extremely important that this panel be laid square ta the eave and ridge so that the remaining panels will line up square on the roaf frame.It is wise to have a person at the eave and at the ridge to ensure that the proper panel coverage is being maintained across the roof. Also be sure that the panels are properly side-lapped(again, see fig. 7 on page 6}. In applications where and-lapping is necessary, the upper panel on the slope should lap over the panel that is lower an the slope. Lower roof pitch requires a greater amaunt of panel overlap. AII end- lap applications require two horizontal rows (across the panel) of butyl sealant tape and proper fastening to pravide a ma�znum water seal. An averhang of 2 to 3 inches is recomm.ended to provide a drip edge, while only 1 inch averhang zs necessary where gutters are used (see p. IS). The open panel ribs at the eave can be sealed with inside closures. For maximum.weather-tightness, a row of butyl tape can be applied above and beneath inside closures. Trimming and Cutting Steel Panels The best device for cutting steel panels acrass the profile is either a portable or hand shear, or a nibbler. Nibblers, however, and especially Carborundum blades on electric saws, da have a tendency to either leave hot metal particles that can buzn paint surfaces or leave rust marks on panels and trim. The same is true of any filings left on the roof caused by the applicatian of screws. Care should be taken to brush all such particles from roof surfaces aftex application. To cut panels lengthwise: Note carefully whexe the panel is to be cut, and, using a straight-edge, score deeply down the length of the panel with a sharp-pointed utility knife.Folding the panel along the score mark, and bending back again if necessary, should praduce a clean break in the panel. i CAUTION! clean all metal shavings and particles off'af raaf to avoid nnsightly rast stains (352} 498-Q778 • ToEI Free {888} 393-0335 * FAX (352} 498-7852 - 3 -