Roof Sump Overflow

If you are using two drains for your roof drainage the possibility of drains being installed at the wrong elevation doubles.

Roof sump overflow.

Unless the roof drains are lower than the surrounding roof they will not drain resulting in huge pools of water. R1200 eu large sump roof drain with adjustable extension. As the two above photos show with two drains that the overflow drain can easily become a ponding problem also. They sump either the zurn z100 and the frank pattern brand roof drains.

21500 rdg2 roof drain. 21500 q91 roof drain. 21500 rdg3 roof drain. Green roof type with stainless steel secured cover.

Each roof drain sump pan has it s own purpose. There are many different ways to create roof sumps as the following pictures show. R1150 spec combined small sump roof and secondary overflow system with loose set sump receiver. They will sump the primary and overflow roof drains.

21500 rdg1 roof drain. R1200 large sump roof drain. But stranger things have happened. The sump however will be a bit unusual being at the end with a vertical overflow.

Roof drain pans are a fast easy and cost effective solution. Green roof drain overflow drain large sump flange. Roof drain sump pans prevent eliminate standing rainwater on your flat roof. R1200 90 large sump roof drain with side outlet.

R1200 buv large sump roof drain with fixed extension sump receiver and deck clamp. You can buy roof drain kits pan and roof drain or just the sump pans only and provide your own roof drains. Green roof type with perforated standpipe.