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• <br /> B. Panel Sealants: <br /> 1. Sealant Tape: Pressure-sensitive, 100 percent solids, gray polyisobutylene <br /> compound sealant tape with release-paper backing. Provide permanently elastic, <br /> nonsag,nontoxic,nonstaining tape 1/2 inch (13 mm)wide and 1/8 inch (3 mm) <br /> thick. <br /> 2. Joint Sealant: ASTM C 920; elastomeric polyurethane,polysulfide, or silicone <br /> sealant; of type, grade, class, and use classifications required to seal joints in <br /> metal roof panels and remain weathertight; and as recommended in writing by <br /> metal roof panel manufacturer. <br /> 3. Butyl-Rubber-Based, Solvent-Release Sealant: ASTM C 1311. <br /> 2.2 UNDERLAYMENT MATERIALS <br /> A. Felts: ASTM D 226, Type II(No. 30), asphalt-saturated organic felts. <br /> B. Slip Sheet: Manufacturer's recommended slip sheet, of type required for application. <br /> 2.3 MISCELLANEOUS MAIERIALS <br /> A. Panel Fasteners: Self-tapping screws, bolts, nuts, self-locking rivets and bolts,end- <br /> welded studs, and other suitable fasteners designed to withstand design loads. Provide <br /> exposed fasteners with heads matching color of metal roof panels by means of plastic <br /> caps or factory-applied coating. Provide EPDM, PVC, or neoprene sealing washers. <br /> B. Bituminous Coating: Cold-applied asphalt mastic, SSPC-Paint 12, compounded for 15- <br /> mil(0.4-mm) dry film thickness per coat. Provide inert-type noncorrosive compound <br /> free of asbestos fibers, sulfur components, and other deleterious impurities. <br /> 2.4 STANDING-SEAM METAL ROOF PANELS <br /> A. General: Provide factory-formed metal roof panels designed to be installed by lapping <br /> and interconnecting raised side edges of adjacent panels with joint type indicated and <br /> mechanically attaching panels to supports using concealed clips in side laps. Include <br /> clips, cleats,pressure plates, and accessories required for weathertight installation. <br /> 1. Steel Panel Systems: Unless more stringent requirements are indicated, comply <br /> with ASTM E 1514. <br /> B. Vertical-Rib, Snap-Joint, Standing-Seam Metal Roof Panels: Formed with vertical ribs <br /> at panel edges and flat pan between ribs; designed for sequential installation by <br /> mechanically attaching panels to supports using concealed clips located under one side <br /> of panels and engaging opposite edge of adjacent panels, and snapping panels together. <br /> SEWER LIFT STATION NO.24 REPLACEMENT PROJECT,UP 3313 <br /> Division 7 Thermal and Moisture Protection Page 07411-6 April2012 <br />