Roof Drains


At this time there are a number of different varieties of roof water drains and roof drain strainer in Gadsden, AL and each is a specific approach to the wide range of roof styles and their drainage challenges. You should take into consideration the type of roof, its size, and the roof pitch to be able to select the correct drain. You also need to take into consideration the site of the drain, how much rainwater is expected and safe practices when selecting a roof drain for a house or commercial building.

Gambrel, dormers, hip and gable roofs shed water thanks to gravitational force. Flat roofs, conversely, accumulate water. Until this water is routed out and away from the roof structure, it will most likely create pools that could inevitably leak and the amassed weight may eventually cause damage to the structure. That is the reason that roofs with a slope of below 2% ought to have roof drains situated in the lowest areas on the roof where water puddles and should be uniformly spaced all throughout the roof top.

Roof Drain Kinds


There are several different alternatives of roof drains. They generally fall into two categories: pitched roof drains and flat roof drains. Pitched roof rainwater drains normally comprise gutters which collect rainwater which travels via gravity down to the roof edge. Gutters direct this water towards downspouts which direct the water flow down and away from the structure or into sewer lines. Flat roof drains can be one of three primary types: scuppers, inner drains or siphonic drains.

Roof Rainwater Drain Scuppes


Scuppers are situated on the roof's periphery. Scuppers can also be placed on a balcony or terrace. Small holes are cut into the side of the roof structure so that water can flow out and drain the roof surface. Scuppers can attach to a downspout, or could be extended to make sure that water is directed away from the structure sides and foundation.

Interior Roof Drains


There are many kinds of inner drains for flat roofs. These are positioned at low places in the roof and attach to interior drainage pipes that route water outdoors or in to a sewer system. Several models of internal roof drains have domes, strainers or covers that prevent trash from clogging the roof drain pipe. These types of drains operate via gravity funneling standing water through the roof drain system. They are made of PVC, cast iron or cast aluminum.

Siphonic Roof Drains

Siphonic roof drains are a more effective substitute for gravity drainage. Conventional flat roof drainage allows both air and water to go into the drain system creating pipe space which is occupied by both air and water. By adding an engineered baffle to the sump of the drain body it produces a siphonic drain which removes air from the system and allows for smaller pipe diameters . When all of the air is removed, a negative air pressure in the tail piece of the drain is established which pulls water off the roof siphonically. Although used mainly for flat roofs, siphonic drains can also be installed on angled roofs.

If you need more information about flat roof drain or roof drain strainer in and around Gadsden, Alabama, give us a call. We'd be glad to help.