Flat Roof Scupper Drain Detail

The top of the roof side flange is extended into a masonry joint.

Flat roof scupper drain detail.

There are three types of drain systems commonly used on flat roofs. Notice that the new drain extends through the shortest possible route to the building exterior where it is conducted to ground or to a storm drain. Field fabricated wall expansion joint curb type detail. Cover strip end lap treatment.

Each of these systems has its own pros and cons. 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. 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. 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.

The detail shows an alternate method of constructing either type of scupper. The detail drawings are grouped by details and can be downloaded below in dwg or pdf format. The scupper is locked and soldered to the closure flange on all sides. Firestone has developed cad drawings of its tpo installation details to assist roofing professionals with the specification of firestone tpo roofing systems.

The best draining system for a flat roof. Field fabricated wall expansion joint flat type detail. On the roof side overflow scuppers can be detailed similar to detail 10 5d. A canale roof scupper is a spout drain installed in the parapet of a flat roof building to drain rainwater.

Download free high quality cad drawings blocks and details of roof drains organized by masterformat. Drain with inter ply parapro flashing. 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. Using this method permits adding a drain at the roof s low point.

When a scupper is connected with a down pipe the chances are it will freeze during winter and not drain any water. There are roof coating products available if there isn t enough slant or slope to accomplish this. This is a small flat roof with a wide mouth scupper. Paraguard roof drain with paraflex 531 liquid flashing.