Roof Drains


At this time there are a few distinct varieties of roof drains and roof drain dome in Fairfield, AL and each one is a specific answer to the variety of roof types and their drainage challenges. You should take into consideration the kind of roof, its dimensions, and its roof pitch to be able to pick the most suitable drain. You also need to take into consideration the site of the drain, what amount of rainwater is anticipated and safe practices when choosing a roof drain for a house or business structure.

Gable, dormer, mansard and hip roofs shed rainwater water because of gravitational force. Flat roofs, alternatively, collect water. Unless this water is routed out and away from the flat roof , it will most likely develop pools of water that could eventually leak and the amassed weight may eventually cause damage to the structure. That is the reason that roofs with a slope of less than two percent ought to have roof drains situated at the lowest areas on the roof in which water puddles and should be uniformly spaced throughout the roof surface.

Roof Drain Types


There are several distinct variations of roof drains. They generally fall into 2 groups: pitched roof drains and flat roof drains. Pitched roof rainwater drains normally comprise gutters which collect rainwater that travels via gravity to the roof periphery. Gutters channel this water towards downspouts which steer the water flow down and far away from the structure or into sewers. Flat roof drains are one of three main types: scuppers, inner drains or siphonic drains.

Roof Rainwater Drain Scuppes


Scuppers are situated on a roof's perimeter. Scuppers can also be put in on a balcony or terrace. Small holes are cut into the side of the roof structure so water can empty and drain the roof surface. Scuppers can hook up to a downspout, or can be extended so that water is directed off of the building sides and foundation.

Interior Roof Drains


There are many types of inner drains for flat roofs. These are installed at low spots on the roof and attach to inner drainage pipes that drive water outdoors or in to a sewer system. Several models of inner roof drains have domes, strainers or covers that keep debris from obstructing the roof drain pipe. These types of drains operate via gravitational force channeling standing water through the roof drain system. They can be made from PVC, cast iron or cast aluminum.

Siphonic Roof Drains

Siphonic roof drains are a more efficient alternative to gravity drainage. Traditional flat roof drainage permits both air and water to go into the drain system producing pipe space which is occupied by both air and water. By incorporating an engineered baffle to the sump of the drain system it produces a siphonic drain that eliminates air from the system and permits smaller pipe diameters to be used. When all air is eliminated, a negative air pressure in the tail portion of the drain is established which pulls rainwater off the roof siphonically. Although used primarily for flat roofs, siphonic drains can also be set up on angled roofs.

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