Roof Sump Overflow

Green roof drain overflow drain large sump flange.

Roof sump overflow.

As the two above photos show with two drains that the overflow drain can easily become a ponding problem also. R1200 buv large sump roof drain with fixed extension sump receiver and deck clamp. 21500 rdg3 roof drain. If you are using two drains for your roof drainage the possibility of drains being installed at the wrong elevation doubles.

The sump however will be a bit unusual being at the end with a vertical overflow. They sump either the zurn z100 and the frank pattern brand roof drains. Buying your own roof drains will save you shipping costs. Green roof type with perforated standpipe.

Roof drain sump pans prevent eliminate standing rainwater on your flat roof. R1200 eu large sump roof drain with adjustable extension. You can buy roof drain kits pan and roof drain or just the sump pans only and provide your own roof drains. But stranger things have happened.

R1150 spec combined small sump roof and secondary overflow system with loose set sump receiver. R1200 large sump roof drain. Each roof drain sump pan has it s own purpose. Green roof type with stainless steel secured cover.

21500 rdg2 roof drain. There are many different ways to create roof sumps as the following pictures show. They will sump the primary and overflow roof drains. Green roof type with internal polypropylene dome.

R1200 90 large sump roof drain with side outlet. 21500 rdg1 roof drain. Unless the roof drains are lower than the surrounding roof they will not drain resulting in huge pools of water.