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SHSC HVAC and Roof Replacement Smith Sinnett / 2020072 <br />Orange County, North Carolina <br /> <br />METAL ROOF SYSTEM 07 41 00 - 6 <br />e. Surfacing: Fiberglass mat. <br />f. Flexural Strength, Parallel (ASTM C473): 100 lbf, minimum. <br />g. Flute Span (ASTM E661): 8 inches. <br />h. Permeance (ASTM E96): greater than 32 perms. <br />i. R-Value (ASTM C518): 0.67. <br />j. Water Absorption (ASTM C1177): Less than 10 percent of weight. <br />k. Compressive Strength (Applicable Sections of ASTM C472):900 pounds per square inch. <br />l. Surface Water Absorption (ASTM C473): Not more than 2.5 grams. <br />m. Acceptable Products: <br />1) DensDeck Prime, Georgia-Pacific Gypsum. <br />2) Equal by USG <br />3) Equal by Certain Teed <br />D. Accessories: Except as indicated as work of another specification section, provide components required <br />for a complete roof or wall panel system, including trim, copings, fascias, gravel stops, mullions, sills, <br />corner units, ridge closures, clips, seam covers, battens, flashings, gutters, downspouts, louvers, sealants, <br />gaskets, fillers, closure strips, and similar items. Match materials and finishes of panels. <br />1. Sealing Tape: Pressure-sensitive 100 percent solids polyisobutylene compound sealing tape with <br />release paper backing. Provide permanently elastic, non-sag, nontoxic, nonstaining tape. <br />2. Joint Sealant: One-part elastomeric polyurethane, polysulfide, or silicone rubber sealant as <br />recommended by the building manufacturer. <br />2.5 PANEL FABRICATION <br />A. General: Fabricate and finish panels and accessories at the factory to greatest extent possible, by <br />manufacturer's standard procedures and processes, as required to fulfill indicated performance <br />requirements demonstrated by laboratory testing. Comply with indicated profiles and dimensional <br />requirements and with structural requirements. On-site fabrication of standing seam roof panels is not <br />allowed. <br />B. Apply bituminous coating or other permanent separation materials on concealed panel surfaces where <br />panels would otherwise be in direct contact with substrate materials that are noncompatible or could <br />result in corrosion or deterioration of either material or finishes. <br />C. Metal Gages: Thicknesses required for structural performances, but not less than manufacturer's <br />recommended minimums for profiles and applications indicated. <br />1. Roof panels shall be minimum 24-gage material thickness. <br />2.6 STANDING SEAM ROOF PANEL SYSTEM <br />A. Standing Seam Roof Panel System: Manufacturer's standard factory-formed standing-seam roof panel <br />system designed for mechanical attachment of panels to roof deck using a concealed clip. Form panels of <br />24-gage aluminum-zinc-coated steel sheets. <br />1. Clips: Provide minimum 16-gage (0.0598-inch) galvanized panel clips designed to meet negative <br />load requirements. <br />2. Cleats: Factory-calked, mechanically seamed cleats formed from minimum 24-gage, Grade C, <br />zinc-coated steel sheets. <br />B. Fabricate roof system panels 16" wide, with 2" to 2-1/2" high, minimum, standing seams. All roof panels <br />and associated trim and flashing shall be 22 gage minimum. Panels shall have a "flat" profile, with <br />intermediate stiffening ribs symmetrically spaced. <br />C. The metal roof system indicated on the Drawings and specified herein is based on the MBCI “SuperLok” <br />system. <br />D. Subject to submittal of data and approval prior to bid, metal roof systems by other manufacturers <br />complying with all requirements of this specification including materials, warranties and compliance with <br />all wind loading. <br />E. All trim and roof transition flashing shall allow the roof panels to move relative to adjoining materials, <br />including masonry walls. <br />DocuSign Envelope ID: 94E7997D-4F29-42F6-A9B4-0A160438D2A6