Roof Drains


There are several distinct kinds of roof water drains and roof drain strainer in Jacksonville, AL and each one is a specific answer to the variety of roof styles and their drainage challenges. You need to look at the type of roof, its dimensions, and the roof pitch to be able to select the correct drain. You also may want to think about the site of the drain, how much rainwater is expected and safety when choosing a roof drain for a house or business structure.

Gambrel, dormers, hip and gable roofs shed rainwater water because of gravitational force. Flat roofs, on the other hand, accumulate water. Unless the water is directed out and away from the flat roof , it will create pools that could inevitably leak and the amassed weight may eventually result in structural damage. That is the reason that roofs with a pitch of below 2% ought to have roof drains situated in the lowest spots on the roof in which water pools and need to be uniformly spread throughout the roof surface.

Roof Drain Types


There are a number of distinct variations of roof drains. They basically fall into two categories: flat roof drains and pitched roof drains. Pitched roof rainwater drains normally comprise gutters which accumulate rainwater that passes via gravity down to the roof edge. Gutters channel this water towards downspouts which steer the water flow down and away from the structure or into sewers. Flat roof drains can be one of three primary types: scuppers, inner drains or siphonic drains.

Roof Rainwater Drain Scuppes


Scuppers are located on the roof's periphery. Scuppers can also be installed on a balcony or terrace. Small openings are cut into the side of the roof structure so that water can flow out and drain the roof top. Scuppers can hook up to a downspout, or could be extended so that water is guided off of the building sides and foundation.

Interior Roof Drains


There are many types of inner drains for flat roofs. These are positioned at low areas on the roof and attach to inner drainage pipes that drive water outside or in to a sewer system. Many versions of inner roof drains have domes, strainers or covers which prevent debris from obstructing the roof drain pipe. These kinds of drains operate via gravitational force channeling pooling water thru 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. Standard flat roof drainage allows both air and water to enter the drain system producing pipe space occupied by both air and water. By adding an engineered baffle to the sump of the drain system it creates a siphonic drain that eliminates air from the system and allows for smaller sized pipe diameters to be used. When all of the air is eliminated, a negative air pressure in the tail piece of the drain is set up which pulls rainwater off the roof siphonically. Although used mainly 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 strainer in and around Jacksonville, Alabama, give us a call. We'd be glad to help.