Architectural · A-4HZXR

Roof Drain and Overflow Drain Sump Assembly

Materials

Elements

Roofs Vaults / Domes Waterproofing / Flashing Drainage

About this detail

Roof drains and overflow drains are set within a one-foot, six-inch minimum drain sump area featuring a drain pan and structural supports placed as required. A cast-iron dome sits above the drain body, surrounded by a flashing ring with an integral gravel stop and flashing compound applied all around. The drain pipe connects below the deck through an underdeck clamp set level, with a two-inch non-combustible fiber cant strip at the perimeter. Minimum clearances of one foot, four inches are maintained from the drain centerline to the structural support framing.

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