Flat Roof Scupper Drain Detail

Scuppers are roof drains on the edge of the roof.

Flat roof scupper drain detail.

A canale roof scupper is a spout drain installed in the parapet of a flat roof building to drain rainwater. This is a small flat roof with a wide mouth scupper. 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. A scupper is almost always part of a peripheral drainage system which is a drainage system in which the water drains off the sides of the roof instead of through the roof itself using drains an internal drainage system.

Field fabricated wall expansion joint flat type detail. The best draining system for a flat roof. Unlike most industry standard roof canales made of wood and sheet metal which deteriorate rapidly in a few short years our fiberspan concrete canales roof scuppers endure the most extreme of weather conditions for many years. Each of these systems has its own pros and cons.

Drain with inter ply parapro flashing. When a scupper is connected with a down pipe the chances are it will freeze during winter and not drain any water. Of course the best designed flat roof has the correct amount of pitch to drain the water off naturally. On the roof side overflow scuppers can be detailed similar to detail 10 5d.

There are three types of drain systems commonly used on flat roofs. Cover strip end lap treatment. Download free high quality cad drawings blocks and details of roof drains organized by masterformat. The detail shows an alternate method of constructing either type of scupper.

Using this method permits adding a drain at the roof s low point. There are roof coating products available if there isn t enough slant or slope to accomplish this. The top of the roof side flange is extended into a masonry joint. Paraguard roof drain with paraflex 531 liquid flashing.

Field fabricated wall expansion joint curb type detail. Adding drains for ponding roofs it is possible to add new roof drains to relieve ponding on a sagged flat roof as shown at left. The detail drawings are grouped by details and can be downloaded below in dwg or pdf format. Hold your cursor over the file name to view when a drawing was last updated.