Architectural · A-A5JYE

Roof Hatch and Drainage Details

Materials

Elements

Beams Walls Railings / Guards Roofs Parapets Decks Waterproofing / Flashing Insulation Drainage Roof / Floor Openings

About this detail

This roof detail assembly features an insulated roof hatch and curb with a side protection railing standing at a minimum of thirty inches above the deck. A single-ply roofing system runs under the hatch flashing edge and is supported by an eighteen-gauge painted sheet metal closure and L4"x4"x1/4" painted steel angles over rigid insulation and wood blocking. The adjacent roof drain assembly incorporates a primary roof drain with an adjustable extension and an overflow roof drain positioned two inches higher, supported by steel angle frames, metal deck, and steel joists above sheet metal drain pans. Plan views illustrate the placement of the primary and overflow drains relative to the parapet wall with specified dimensional spacings.

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