Architectural · A-TRMB4

Single-Ply Roof Drain Assembly at Low Slope Steel Deck

Materials

Elements

Roofs Decks Waterproofing / Flashing Drainage Roof / Floor Openings

About this detail

A roof drain assembly for a low-slope single-ply roofing system on a steel deck. The single-ply roofing field membrane is fully adhered into the drain bowl over a cover board and specified insulation. A tapered insulation cricket extends at least one foot six inches around the drain or as required by the roofing manufacturer. Sealing mastic is applied beneath the drain flange, and the assembly is secured with a deck clamp and clamp ring. A drain strainer sits atop the bowl, and a drain pipe connects below.

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