Architectural · A-5H6FY

Roof RTU Pad Flashing

Materials

Timber / Wood Aluminum Metal (misc.)EIFS / Plaster / Stucco Membrane / Roofing

Elements

Roofs Parapets Ceilings Waterproofing / Flashing Site / Paving Roof / Floor Openings

Connections

Welded Connection

About this detail

A rooftop unit pad flashing assembly on a low-slope roof incorporates an SBS vapor retarder beneath the primary single-ply roofing membrane, which extends up the mechanical curb with a minimum eight-inch vertical turn-up. A termination bar with sealant secures the top edge of the flashing membrane. The mechanical curb rests on an acoustic vibration isolation layer per acoustic drawings, supporting the rooftop unit above. A sheet metal cap flashing with removable counterflashing and a minimum one-quarter inch per twelve inches slope tops the assembly, separated from the curb by high-temperature self-adhering flashing, aluminum separator tape, and a neoprene gasket.

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