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MANUSPEC 2.3 Substrate Boards


A. 22 gauge B-deck for new construction B. Deck attachment: a. Follow DMC Engineering Report specifications for deck attachment b. When re-roofing, where the deck is less than 22 gauge the above attachment method must be added to the existing attachment


C. Polyisocyanurate Foam Board Insulation a. Minimum of ¾” and maximum of 8” thick approved rigid board insulation with a current NOA having a minimum of 20 psi comprehensive strength. Fastening density will be in compliance with applicable building code and roofing application standard RAS 117


2.4 Miscellaneous Materials


A. Fasteners: Self-Drilling #10 min. pancake head fasteners sufficiently long enough to penetrate B-Deck designed to withstand design loads. a. See DMC Engineering Report for fastener specifications b. Blind Fasteners: High-strength aluminum or stainless-steel rivets


B. Concealed-Fastener, Mechanically Seamed Metal Roof Panels: Factory-formed or onsite, designed to be field assembled by lapping and interconnecting side edges of adjacent panels and mechanically attaching clips with appropriate fasteners between vertical legs of Standing Seam Roof System. Seem DMC Engineering for exact specifications. Include accessories required for weather tight installation


2.5 Standing Seam Roof Panels


a. Manufacturer: i. Drexel Metals Inc. – (888) 321-9630


b. Profile: DMC 200S Standing Seam Metal Roofing Systems as indicated on drawings


c. Material: Metallic-coated steel sheet, 24 gauge/.023” nominal thickness, or 22 gauge/.030” nominal thickness i. Exterior Finish: Drexmet® High Performance Metal Roofing Finishes (Trinar®)


ii. Color: As selected by architect or building owner from Drexel Metals Inc. Standard Color Chart


d. Panel Coverage: 16” Maximum e. Panel Height: 2.00” Minimum f. Panel Length: Continuous with no end laps or panel splices allowed g. Pan Configuration: Flat, Striations, Minor Ribs, or Vee Grooves h. Uplift Rating: UL 580, TAS 125, Miami-Dade County NOA #11-0405.03, Florida Building Code Approval FBC #12114.10


i. Wind-Driven Rain: TAS 100 j. Air Infiltration: ASTM E 1680


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