Architectural · A-JT9F7

Roof Edge Gutter and Parapet Flashing Detail

Materials

Elements

Walls Facades / Cladding Roofs Decks Waterproofing / Flashing Insulation Drainage Connections / Plates

About this detail

This roof edge assembly consists of a metal deck supporting a layer of five-eighths-inch densdeck, two layers of two-inch rigid insulation, a torched modified bitumen secondary membrane, and a top layer of five-eighths-inch densdeck. The roof perimeter incorporates a top pressure-treated wood nailer sloped toward the edge, paired with pressure-treated wood blocking secured with self-tapping screws at twenty-four inches on center. A continuous twenty-four gauge galvanized steel skirt extends a minimum of two inches below the top of the wall and is fastened at a maximum of eighteen inches on center over an insulated metal panel and bent plate structure. A prefinished twenty-four gauge galvanized steel gutter is supported by one-quarter-inch by one-and-a-half-inch galvanized metal brackets and metal straps staggered at thirty-six inches on center, matching the gutter finish. Membrane flashing seals all exposed edges, with sealant provided behind the membrane.

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