Flat Roof Drain Cover

Larger roofs collect more water that may not drain quickly enough with just a gravity system.

Flat roof drain cover.

It is very critical to position drains for maximum effect. The result is the number of drains needed. Most strainers or domes that cover a drain on flat roofs are poorly designed because they block smaller debris and the strainer becomes clogged preventing any water flow. Gravity drainage systems are only recommended for flat or low slope commercial roofs that have a surface area of less than 150m 2 per drainage point.

Replaces popular 10 inch plastic strainers domes. This table is based on zurn s roof drain vertical requirement for horizontal roof areas at various rainfall rates table. Old style drain strainers. 9 1 2 od base x 4 1 4 high with 3 bolt mounting holes.

Calculate drains needed. 1 16 of 376 results for flat roof drain plastic oddities prd900p 3 pvc roof drain with plastic dome. Only 14 left in stock order soon. These types of objects will cause blockage in drain pipes.

There are three types of drain systems on a flat roof. Roof drains parts accessories floor drains parts accessories downspout nozzles adaptors couplings fittings backwater valves parts accessories carriers and fixture supports cleanouts access covers flanges parts accessories floor sinks parts accessories fluid controls hydrants interceptors shower drains parts accessories specialty products stainless steel drains value. So often we find that inner drains are high on the roof causing water to pool around them. Those roofs benefit from siphonic drainage systems.

Shop for roof drains at ferguson. The above sizing data is offered as a guide only. Most draining systems on flat roofs have a poor design or are not correctly installed. Take the roof s total square footage and divide by the total square footage handled by one drain.

Twigs seashells and rocks should not be able to get through strainer holes or slots. More buying choices 26 62 3 used new offers. Ferguson is the 1 us plumbing supply company and a top distributor of hvac parts waterworks supplies and mro products.