Overflow Scuppers Roofs

Prefabricated pitch pans deliver a watertight seal around rooftop protrusions while scuppers provide solutions for drainage challenges.

Overflow scuppers roofs.

The top of the roof side flange is extended into a masonry joint. Flat roofs that do not drain over the roof edge and roofs that have parapet walls must utilize roof drains to get the water off the roof. Discover time off the roof benefits with scuppers and pitch pans from exceptional metals and duro last. These metal accessories come with membrane welded to them reducing installation time and providing a clean aesthetically pleasing finish.

Installing overflow drains to the same lines will eliminate flow due to the primary drains constraints. Where you have roof drains you are also required to have overflow drains. Scuppers are rectangular openings in parapet walls that are a minimum of 4 inches in width and height ranging from 4 to 6 inches. The scupper is locked and soldered to the closure flange on all sides.

When scuppers are used for secondary emergency overflow roof drainage the quantity size location and inlet elevation of the scuppers shall be sized to prevent the depth of ponding water from exceeding that for which the roof was designed as determined by section 1611 1. When scuppers are used for secondary emergency overflow roof drainage the quantity size location and inlet elevation of the scuppers shall be sized to prevent the depth of ponding water from exceeding that for which the roof was designed as determined by section 1611 1. They are often too small by factors of two or three or more and in the case of overflow scuppers they are often positioned two or three times too high. Scuppers shall not have an opening dimension of less than 4 inches.

Overflow drains and scuppers roof drainage. The sides of the flange are sealed against the masonry. In effect these roofs represent nightmares just waiting to play out in real life. 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.

Scuppers shall not have an opening dimension of less than 4 inches. This is especially true whenever scuppers are used for primary drains and or overflows. On the roof side overflow scuppers can be detailed similar to detail 10 5d. There are different code requirements for scuppers depending on which role they play.