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INDIAN RIVER COUNTY COURTHOUSE <br />METAL ROOFING REPLACEMENT PROJECT <br />JANUARY 15, 2021 <br />PAGE 4 <br />SECTION 076200 <br />SHEET METAL AND FLASHINGS <br />Manufacturers: Subject to compliance with requirements, provide products by <br />one of the following: <br />a. GCP Applied Technologies Inc. <br />b. Henry Company. <br />2. Low -Temperature Flexibility: ASTM D197001970M; passes after testing at <br />minus 20 deg F (29 deg C) or lower. <br />3. . Standard Testing method for linear dimensional changes of nonrigid <br />thermoplastic sheeting or film at elevated temperature: ASTM D1204 — above <br />280 degrees F service temp. <br />2.4 MISCELLANEOUS MATERIALS <br />A. General: Provide materials and types of fasteners, solder, protective coatings, <br />sealants, and other miscellaneous items as required for complete sheet metal flashing <br />and trim installation and as recommended by manufacturer of primary sheet metal or <br />manufactured item unless otherwise indicated. <br />B. Fasteners: Self -tapping screws, self-locking rivets and bolts, and other suitable <br />fasteners designed to withstand design loads and recommended by manufacturer of <br />primary sheet metal or manufactured item. <br />1. General: Blind fasteners or self -drilling screws, gasketed, with hex -washer head. <br />2. Fasteners for Stainless Steel Sheet: Series 300 stainless steel. <br />3. Fasteners for Steel Sheet: Series 300 stainless steel <br />C. Solder: <br />1. For Stainless Steel: ASTM B32, Grade Sn60, with acid flux of type recommended <br />by stainless steel sheet manufacturer. <br />2. For Zinc -Coated (Galvanized) Steel: ASTM B32, Grade Sn50, 50 percent tin and <br />50 percent lead or Grade Sn60, 60 percent tin and 40 percent lead. <br />D. Sealant Tape: Pressure -sensitive, 100 percent solids, polyisobutylene compound <br />sealant tape with release -paper backing. Provide permanently elastic, nonsag, <br />nontoxic, nonstaining tape 1/2 inch (13 mm) wide and 1/8 inch (3 mm) thick. <br />E. Elastomeric Sealant: ASTM C920, elastomeric polyurethane polymer sealant; of type, <br />grade, class, and use classifications required to seal joints in sheet metal flashing and <br />trim and remain watertight. <br />F. Butyl Sealant: ASTM C1311, single -component, solvent -release butyl rubber sealant; <br />polyisobutylene plasticized; heavy bodied for hooked -type expansion joints with limited <br />movement. <br />