Roof Drains


At this time there are several distinct types of roof water drains and roof drain system in Clanton, AL and each one is an unique solution to the variety of roof types and their drainage challenges. You must take into consideration the type of roof, its size, and the roof pitch to be able to select the right drain. You also need to take into consideration the site of the drain, what amount of rainwater is anticipated and safety when choosing a roof water drain for a home or commercial building.

Gambrel, dormers, hip and gable roofs shed water thanks to gravitational force. Flat roofs, on the other hand, accumulate rain water. Until this water is routed out and away from the roof , it will develop pools that may inevitably leak and the amassed weight may subsequently cause compromising the integrity of the structure. That is the reason that roofs with a pitch of under two percent should have roof drains located in the lowest places on the roof where water puddles and need to be evenly spaced throughout the roof surface.

Roof Drain Kinds


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

Roof Drain Scuppers


Scuppers are situated on the roof's perimeter. They can also be installed on a balcony or terrace. Small holes are cut into the side of the roof structure so that rain water can empty and drain the roof top. Scuppers can connect to a downspout, or could be lengthened so that water is directed off of the structure sides and foundation.

Interior Roof Drains


There are quite a few different types of inner drains for flat roofs. These are positioned at low spots on the roof and attach to interior drainage pipes that direct water outdoors or in to a sewer system. Several versions of inner roof drains have domes, strainers or covers that prevent trash from clogging the roof drain pipe. These kinds of drains operate via gravitational force funneling standing water through the roof drain system. They can be made of PVC, cast iron or cast aluminum.

Siphonic Roof Drains

Siphonic roof drains are a more effective alternative to gravity drainage. Traditional flat roof drainage permits both air and water to go into the drain system creating pipe space which is occupied by both air and water. By incorporating an engineered baffle to the sump of the drain body it produces a siphonic drain which removes air from the system and permits smaller sized pipe diameters . When all of the air is eliminated, a negative air pressure in the tail piece of the drain is established which attracts rainwater off the roof siphonically. Although used mainly for flat roofs, siphonic drains can also be installed on pitched roofs.

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