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INDIAN RIVER COUNTY — NORTH COUNTY REGIONAL PARK <br />AQUATIC FACILITY ROOFING REPLACEMENT <br />JUNE 7, 2019 <br />PAGE 6 <br />SECTION 074210 <br />METAL WALL PANELS <br />2. Concealed Finish: Apply pretreatment and manufacturer's standard white or light-colored <br />acrylic or polyester backer finish consisting of prime coat and wash coat with a minimum <br />total dry film thickness of 0.5 mil (0.013 mm). <br />B. Panel Sealants: <br />1. Sealant Tape: Pressure -sensitive, 100 percent solids, gray polyisobutylene compound <br />sealant tape with release -paper backing. Provide permanently elastic, nonsag, nontoxic, <br />nonstaining tape 1/2 inch (13 mm) wide and 1/8 inch (3 mm) thick. <br />2. Joint Sealant: ASTM C 920; elastomeric polyurethane, polysulfide, or silicone sealant; of <br />type, grade, class, and use classifications required to seal joints in metal wall panels and <br />remain weathertight; and as recommended in writing by metal wall panel manufacturer. <br />3. Butyl -Rubber -Based, Solvent -Release Sealant: ASTM C 1311. <br />2.2 CONCEALED -FASTENER, LAP -SEAM METAL WALL PANELS <br />A. General: Provide factory -formed metal wall panels designed to be field assembled by lapping and <br />interconnecting side edges of adjacent panels and mechanically attaching through panel to <br />supports using concealed fasteners and factory -applied sealant in side laps. Include accessories <br />required for weathertight installation. <br />B. Standing Seam Profile, Concealed -Fastener Metal Wall Panels: Formed with vertical panel edges <br />and intermediate stiffening ribs symmetrically spaced between panel edges. <br />1. Manufacturers: Subject to compliance with requirements, provide products by one of the <br />following: <br />2. Basis -of -Design Product: Subject to compliance with requirements, provide IMETCO or <br />comparable product by one of the following: <br />a. PAC -CLAD Petersen Aluminum Corporation. <br />b. Englert, Inc. <br />3. Material: Aluminum sheet, 0.040 inch (1.02 mm) thick. <br />a. Exterior Finish: 2 -coat fluoropolymer. <br />b. Color: Custom color to match upper metal roofing assembly. <br />4. Panel Coverage: 12 inches (305 mm). <br />5. Panel Height: 1.0 inch (25 mm). <br />2.3 ACCESSORIES <br />A. Wall Panel Accessories: Provide components required for a complete metal wall panel assembly <br />including trim, copings, fasciae, mullions, sills, corner units, clips, flashings, sealants, gaskets, <br />fillers, closure strips, and similar items. Match material and finish of metal wall panels, unless <br />otherwise indicated. <br />1. Closures: Provide closures at eaves and rakes, fabricated of same metal as metal wall <br />panels. <br />2. Backing Plates: Provide metal backing plates at panel end splices, fabricated from material <br />recommended by manufacturer. <br />