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INDIAN RIVER COUNTY COURTHOUSE PAGE 8 <br />METAL ROOFING REPLACEMENT PROJECT SECTION 076200 <br />JANUARY 15, 2021 SHEET METAL AND FLASHINGS <br />b. When ambient temperature at time of installation is between 40 and 70 <br />deg F (4 and 21 deg C), set joint members for 50 percent movement each <br />way. <br />C. Adjust setting proportionately for installation at higher ambient <br />temperatures. <br />1) Do not install sealant -type joints at temperatures below 40 deg F (4 <br />deg C). <br />2. Prepare joints and apply sealants to comply with requirements in Section 079200 <br />"Joint Sealants." <br />G. Soldered Joints: Clean surfaces to be soldered, removing oils and foreign matter. <br />1. Pretin edges of sheets with solder to width of 1-1/2 inches (38 mm); however, <br />reduce pretinning where pretinned surface would show in completed Work. <br />2. Do not use torches for soldering. <br />3. Heat surfaces to receive solder, and flow solder into joint. <br />a. Fill joint completely. <br />b. Completely remove flux and spatter from exposed surfaces. <br />4. Stainless Steel Soldering: <br />a. Tin edges of uncoated sheets, using solder for stainless steel and acid flux. <br />b. Promptly remove acid -flux residue from metal after tinning and soldering. <br />C. Comply with solder manufacturer's recommended methods for cleaning <br />and neutralization. <br />3.3 INSTALLATION OF ROOF -DRAINAGE SYSTEM <br />A. Install sheet metal roof -drainage items to produce complete roof -drainage system in <br />accordance with cited sheet metal standard unless otherwise indicated. Coordinate <br />installation of roof perimeter flashing with installation of roof -drainage system. <br />B. Hanging Gutters: <br />1. Join sections with riveted and soldered joints. <br />2. Provide for thermal expansion. <br />3. Attach gutters at eave or fascia to firmly anchor them in position. <br />4. Provide soldered end closures. <br />5. Slope to downspouts. <br />6. Install gutter with expansion joints at locations indicated on Drawings, but not <br />exceeding, 40 feet (15.2 m) apart. Install expansion -joint caps. <br />3.4 INSTALLATION OF ROOF FLASHINGS <br />A. Install sheet metal flashing and trim to comply with performance requirements, sheet <br />metal manufacturer's written installation instructions, and cited sheet metal standard. <br />