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SHSC HVAC and Roof Replacement Smith Sinnett / 2020072 <br />Orange County, North Carolina <br /> <br />ROOF ACCESSORIES 07 72 00 - 5 <br />3.2 INSTALLATION <br />A. General: Install roof accessories according to manufacturer's written instructions. Anchor roof <br />accessories securely in place and capable of resisting forces specified. Use fasteners, separators, sealants, <br />and other miscellaneous items as required for completing roof accessory installation. Install roof <br />accessories to resist exposure to weather without failing, rattling, leaking, and fastener disengagement. <br />B. Install roof accessories to fit substrates and to result in watertight performance. <br />C. Metal Protection: Where dissimilar metals will contact each other or corrosive substrates, protect against <br />galvanic action by painting contact surfaces with bituminous coating or by other permanent separation as <br />recommended by manufacturer. <br />1. Coat concealed side of uncoated aluminum roof accessories with bituminous coating where in <br />contact with wood, ferrous metal, or cementitious construction. <br />2. Underlayment: Where installing exposed-to-view components of roof accessories directly on <br />cementitious or wood substrates, install a course of felt underlayment and cover with a slip sheet, <br />or install a course of polyethylene underlayment. <br />3. Bed flanges in thick coat of asphalt roofing cement where required by roof accessory <br />manufacturers for waterproof performance. <br />D. Install roof accessories level, plumb, true to line and elevation, and without warping, jogs in alignment, <br />excessive oil canning, buckling, or tool marks. <br />E. Roof Curb Installation: <br />1. Set roof curb so top surface of roof curb is level. <br />F. Equipment Support Installation: <br />1. Set equipment support so top surface of equipment support is level. <br />G. Roof Walkway Installation: <br />1. Verify location of points of access to roof-mounted equipment via use of roof walkways. <br />H. Seal joints with elastomeric sealant as required by manufacturer of roof accessories. <br />3.3 TOUCH UP <br />A. Touch up factory-primed surfaces with compatible primer ready for field painting in accordance with <br />Division 09 Section “Painting”. <br />B. Galvanized Surfaces: Clean field welds, bolted connections, and abraded areas and repair galvanizing to <br />comply with ASTM A 780. <br />3.4 CLEANING <br />A. Clean exposed surfaces according to manufacturer's written instructions. <br />END OF SECTION 07 72 00 <br /> <br /> <br /> <br /> <br />DocuSign Envelope ID: 94E7997D-4F29-42F6-A9B4-0A160438D2A6