Architectural · A-EVZJM

Transverse Roof Drain and Sump Section with Crickets

Materials

Timber / Wood Metal (misc.)Membrane / Roofing

Elements

Walls Roofs Parapets Decks Waterproofing / Flashing Insulation Drainage

Connections

Deck Attachment

About this detail

Primary and secondary roof drain assemblies are installed in sumps with extension sleeves and underdeck clamps supported by the metal deck structure. Custom wood blocking and tapered rigid insulation create drainage slopes toward the roof low points. Single-ply roof membrane and protection board cover the insulation, secured with bonding adhesive applied typically. Continuous sealant seals joints at the drain flange and flashing intersections. A water dam is included as required at the secondary drain assembly. An axonometric view presents the adjacent roof edge with metal coping, roofing underlayment membrane, SBS base sheet, sheet metal flashing with staggered joints, and fasteners at eight inches on center into the nailer.

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