1200 INDUSTRY ST 2025-03-24 - Laserfiche WebLink

3. Cleats: Galvanized steel, minimum 22 gauge G-90 galvanized steel or one grade thicker than gravel stop or fascia being anchored whichever is greater. Provide 1/4' kick. Attach with corrosion resistant No. 10 screws, spaced 12" o.c. F. Scuppers and Collectors: 1. Sleeve: Galvanized steel, minimum 24 gauge G-90 galvanized steel, mill finish. 2. Wall/Deck flange: Galvanized steel, minimum 24 gauge, coated with a minimum of 28 mils of TPO polymer to match the membrane. 3. Face Plates: Shall be pre-painted fluoropolymer coated galvanized steel, 24 gauge minimum. G. Storm Collars: 1. For large pipes (greater than 3" diameter), fabricate from 24 gauge galvanized steel. Spot weld angle brackets to collar(properly spaced) and drill two 3/16" diameter holes on vertical leg of brackets to secure collar with a nut and bolt assembly (refer to drawings). 2. For small pipes, fabricate from reinforced flexible membrane. Secure with a stainless steel draw band. PART 3 - EXECUTION 3.01 EXAMINATION A. Examine substrates and conditions under which sheet metal flashing and trim are to be installed and verify that Work may properly commence. Do not proceed with installation until unsatisfactory conditions have been corrected. B. Verify that surfaces are true and sound enough to retain fasteners as specified. C. Verify that wood blocking has been provided below membrane for securement of galvanized flanges. Note, lead flanges do not require wood blocking. 3.02 GENERAL A. Unless otherwise indicated, install sheet metal flashing and trim to comply with performance requirements, manufacturer's installation instructions, as specified in this section. Anchor units of Work securely in place by methods indicated, providing for thermal expansion of metal units; conceal fasteners where possible, and set units true to line and level as indicated. Install Work with laps,joints, and seams that will be permanently watertight and weatherproof. B. Coordinate with installation of substrates to receive work of this Section and with roofing system, as required to ensure that each element of the Work performs properly and that combined elements are waterproof and weather tight. Anchor products securely to structural substrates to withstand lateral and thermal stresses and inward and outward loading pressures. C. Metal siding and trim shall be removed and replaced for proper installation of the closure piece. D. Install exposed sheet metal Work that is without excessive oil canning, buckling, and tool marks and that is true to line and levels indicated, with exposed edges folded back to form hems. Install sheet metal flashing and trim to fit substrates and to result in waterproof and weather- resistant performance. Verify shapes and dimensions of surfaces to be covered before fabricating sheet metal. E. Contractor shall provide closures for all sheet metal flashing terminations. The butt ends shall be fabricated with flanges that conform to the facets of the adjacent wall or substrate. "Dog ears" or gussets shall be attached and soldered where the metal is cut and bent to change planes. At concrete walls, the butt plate shall be fastened and sealed along the top edge with caulking. Butyl sealant tape shall be sandwiched between the wall and the metal flange. F. Contractor shall round the corners of all flanges that are to be nailed and set over the completed membrane or flashings. G. Expansion Provisions: Provide for thermal expansion of exposed sheet metal Work. Space movement joints at maximum of 10 feet(3 m)with no joints allowed within 24 inches (610 mm) of corner or intersection. Where lapped or bayonet-type expansion provisions in Work cannot SEA00511 / Prologis - SEA00511 07 6210 -4 Sheet Metal Flashing and Trim - FY24- Everett 1 - Capital Roofing Project