Roof Drains Or Scuffers

This is a small flat roof with a wide mouth scupper.

Roof drains or scuffers.

An overflow drainage system will be designed to function independently of the primary system to drain water from the roof. A roof scupper is a roof drainage system that provides drainage of a flat roof by allowing the water runoff from the roof to exit the roof through a metal edge parapet wall or through the deck into a downspout or leader. This will never clog up with leaves. Scuppers will play one of two roles in a roof system.

Scupper roof drains from zurn manufactures a variety of sizes and finishes. Scupper drain 11 3 4 inches wide x 11 3 4 high x 8 long deep drain opening area with 4 in. Aluminum retrofit roof drain with anti ponding membrane clamp insert seal connector vandal resistant aluminum flip top dome 4 heavy duty threaded anchoring studs submittal sheet 3270 scupper drain with angle grate. They will either be a part of the primary drainage system or they will be a part of the secondary overflow drainage system a primary drainage system is designed to remove water from the roof as quickly as possible.

Scuppers are roof drains on the edge of the roof. The full flow capacity of a drain is not realized until the water reaches approximately 2 5 inches above the inlet in a four inch drain and 3 5 inches in a six inch drain. E there is at least one drain for each 900 m 2. Outer face and front lip 26ga galvanized steel with soldered seams.

Scuppers are open holes or channels cut into the roof edge or parapet. Cast options ranging from iron to stainless steel. 3 where the height of the parapet is more than 150 mm or exceeds the height of the adjacent wall flashing a emergency roof overflows or scuppers described in clause 2 c shall be provided and b there shall be a minimum of two roof drains. This is the best type of scuppers because it has a wide opening to allow debris to wash off during a good rain.

The best draining system for a flat roof. The factors which affect proper roof drainage are deck slope drain flashing size and placement of drains.