Roof Drainage Scupper

Scuppers are open holes or channels cut into the roof edge or parapet.

Roof drainage scupper.

Flat roof drainage system specifications designs troubleshooting problems solutions for interior drains on flat building roofs flat roof drains scuppers and screens questions answers about keeping the flat roof drainage system working or about installing new drains in a flat roof. Scuppers can be installed to carry water into gutters or directly into downspouts through conductor heads. E there is at least one drain for each 900 m 2. Scuppers are used to provide an outlet through parapet walls or gravel stops on flat and built up roofs to allow drainage of excess water.

26 gauge galvanized soldered face connection. 1 2 3 next 2 review s scupper rnd3 5x12. 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. Open end scuppers allow for debris to be washed off the roof unlike a drain or gutter that gets full of debris.

They can be used in conjunction with gutters and downspouts to divert the flow to the desired location. 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. Wide mouth scuppers are the best for draining water off a flat roof. Flat roofs that are designed to have scuppers as a drainage system are almost maintenance free.

In short a scupper is a detail that provides drainage to a roof system 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 not run through the interior of the building. Round x 12 in. Scuppers will play one of two roles in a roof system. The national roofing contractors association defines scupper as a drainage device in the form of an outlet through a wall parapet wall or raised roof edge typically lined with a sheet metal sleeve it is more often seen in apartments and other commercial buildings though is sometimes found in residential homes constructed with flat roofs.

Scupper drain 3 1 2 inch od round x 12 long drain with 4 inch outer face and front lip. The roof is sloped toward the scuppers and water simply drains out through the scuppers. Debris and small objects will not get stuck. Scuppers are commonly used on flat roofs that have a parapet or other type of perimeter barrier enclosing the roof.

An overflow drainage system will be designed to function independently of the primary system to drain water from the roof.