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Orange County Architectural Renovations Smith Sinnett / 2023036 <br />Hillsborough, NC Orange County Asset Management Services <br />SHEET METAL FLASHING AND TRIM 07 62 00 - 2 <br />4. Obtain Architect’s approval of mockups before start of final unit of Work. <br />1.6 PROJECT CONDITIONS <br />A. Coordinate Work of this Section with interfacing and adjoining Work for proper sequencing of each <br />installation. Ensure best possible weather resistance, durability of Work, and protection of materials and <br />finishes. <br />PART 2 - PRODUCTS <br />2.1 METALS <br />A. Aluminum: Alloy and temper recommended by aluminum producer and finisher for type of use and finish <br />indicated and with not less than the strength and durability of alloy and temper designated below unless <br />otherwise indicated. <br />2.2 MISCELLANEOUS MATERIALS AND ACCESSORIES <br />A. Fasteners: Same metal as sheet metal flashing or other noncorrosive metal as recommended by sheet <br />metal manufacturer. Match finish of exposed heads with material being fastened. <br />1. Fasteners for Stainless-Steel Sheet: Series 316 stainless steel. <br />2. Fasteners for Aluminum-Zinc Alloy-Coated Steel Sheet: Hot-dip galvanized steel according to <br />ASTM A 153/A 153M or ASTM F 2329 or Series 316 stainless steel. <br />B. Mastic Sealant: Polyisobutylene; nonhardening, nonskinning, nondrying, nonmigrating sealant. <br />C. Elastomeric Sealant: Generic type recommended by sheet metal manufacturer and fabricator of <br />components being sealed and complying with requirements for joint sealants as specified in Division 7 <br />Section "Joint Sealants." <br />D. Paper Slip Sheet: 5-lb/square red rosin, sized building paper conforming to FS UU-B-790, Type I, <br />Style 1b. <br />E. Metal Accessories: Provide sheet metal clips, straps, anchoring devices, and similar accessory units as <br />required for installation of Work, matching or compatible with material being installed; noncorrosive; <br />size and thickness required for performance. <br />2.3 FABRICATION, GENERAL <br />A. Sheet Metal Fabrication Standard: Fabricate sheet metal flashing and trim to comply with <br />recommendations of SMACNA’s "Architectural Sheet Metal Manual" 7th edition, 2012 that apply to the <br />design, dimensions, metal, and other characteristics of the item indicated. <br />B. Comply with details shown to fabricate sheet metal flashing and trim that fit substrates and result in <br />waterproof and weather-resistant performance once installed. Verify shapes and dimensions of surfaces <br />to be covered before fabricating sheet metal. <br />C. Form exposed sheet metal Work that is without excessive oil canning, buckling, and tool marks and that <br />is true to line and levels indicated, with exposed edges folded back to form hems. <br />D. Lapped or bayonet-type expansion joints are not permitted. <br />E. Sealed Joints: Form nonexpansion, but movable, joints in metal to accommodate elastomeric sealant to <br />comply with SMACNA standards and as follows: <br />F. Fabricate sealed joints in prefinished sheet metal with butt joints and concealed splice plates. Install <br />silicone elastomeric sealant between exposed metal work and splice plates, and rivet one side of <br />fabricated unit to splice plate for strength. <br />Docusign Envelope ID: 52FACC74-DA96-491B-B0B8-04AC3961737D