Flat Roof Drain Cover

Replaces popular 10 inch plastic strainers domes.

Flat roof drain cover.

It is very critical to position drains for maximum effect. The above sizing data is offered as a guide only. 9 1 2 od base x 4 1 4 high with 3 bolt mounting holes. Calculate drains needed.

Larger roofs collect more water that may not drain quickly enough with just a gravity system. More buying choices 26 62 3 used new offers. Shop for roof drains at ferguson. So often we find that inner drains are high on the roof causing water to pool around them.

Ferguson is the 1 us plumbing supply company and a top distributor of hvac parts waterworks supplies and mro products. Those roofs benefit from siphonic drainage systems. Get it as soon as thu sep 3. Most draining systems on flat roofs have a poor design or are not correctly installed.

Old style drain strainers. Twigs seashells and rocks should not be able to get through strainer holes or slots. This table is based on zurn s roof drain vertical requirement for horizontal roof areas at various rainfall rates table. These types of objects will cause blockage in drain pipes.

Free shipping by amazon. The result is the number of drains needed. Take the roof s total square footage and divide by the total square footage handled by one drain. Only 14 left in stock order soon.

1 16 of 376 results for flat roof drain plastic oddities prd900p 3 pvc roof drain with plastic dome. 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.