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ROOFING REPLACEMENT, RECOVER AND REPAIR PROJECT PAGE 5 <br />INDIAN RIVER COUNTY — JAIL COMPLEX SECTION 076200 <br />JANUARY 4, 2018 SHEET METAL FLASHING AND TRIM <br />H. Butyl Sealant: ASTM C 1311, single -component, solvent -release butyl rubber sealant, <br />polyisobutylene plasticized, heavy bodied for hooked -type expansion joints with limited <br />movement. <br />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 non -corrosive compound <br />free of asbestos fibers, sulfur components, and other deleterious impurities. <br />J. Asphalt Roofing Cement: ASTM D 4586, asbestos free, of consistency required for <br />application. <br />K. Undedayment: Grace Ultra. <br />2.4 FABRICATION, GENERAL <br />A. General: Custom fabricate sheet metal flashing and trim to comply with <br />recommendations in SMACNA's "Architectural Sheet Metal Manual" that apply to <br />design, dimensions, metal, and other characteristics of item indicated. Shop fabricate <br />items where practicable. Obtain field measurements for accurate fit before shop <br />fabrication. <br />B. Fabricate sheet metal flashing and trim in thickness or weight needed to comply with <br />performance requirements, but not less than that specified for each application and <br />metal. <br />C. Fabricate sheet metal flashing and trim without excessive oil canning, buckling, and tool <br />marks and true to line and levels indicated, with exposed edges folded back to form <br />hems. <br />1. Seams: Fabricate nonmoving seams in accessories with flat -lock seams. Tin <br />edges to be seamed, form seams, and solder. <br />D. Sealed Joints: Form nonexpansion but movable joints in metal to accommodate <br />elastomeric sealant to comply with SMACNA recommendations. <br />E. Expansion Provisions: Where lapped or bayonet-type expansion provisions in the Work <br />cannot be used, form expansion joints of intermeshing hooked flanges, not less than 1 <br />inch (25 mm) deep, filled with butyl sealant concealed within joints. <br />F. Conceal fasteners and expansion provisions where possible on exposed -to -view sheet <br />metal flashing and trim, unless otherwise indicated. <br />G. Fabricate cleats and attachment devices from 20 ga. Stainless steel. <br />1. Thickness: As recommended by SMACNA's "Architectural Sheet Metal <br />Manual" and FMG Loss Prevention Data Sheet 1-49 for application but not less <br />than thickness of metal being secured. <br />