Roof Drains


At this time there are several distinct kinds of roof water drains and roof drain downspout in Muscle Shoals, AL and each is an unique answer to the variety of roof types and their drainage issues. You should think about the type of roof, its size, and the roof pitch to be able to pick the most suitable drain. You also should take into account the location of the drain, how much rainwater is expected and safety when choosing a roof drain for a home or business structure.

Hip roofs, dormers, gable and mansard roofs shed rainwater water because of gravity. Flat roofs, conversely, accumulate rain water. Unless the water is routed out and away from the roof , it will develop pools that could eventually leak and the accumulated weight will subsequently result in damage to the structure. That is the reason that roofs with a pitch of less than 2% ought to have roof drains situated in the lowest areas on the roof where water puddles and need to be uniformly spread all throughout the roof top.

Types of Roof Drains


There are a number of distinct alternatives of roof drains. They basically fall into 2 categories: pitched roof drains and flat roof drains. Pitched roof drains usually consist of gutters which collect rainwater which travels via gravity to the roof edge. Gutters direct this water in the direction of downspouts which route the water flow down and away from the structure or in to sewer lines. Flat roof drains can be one of three primary types: scuppers, inner drains or siphonic drains.

Roof Drain Scuppers


Scuppers are located on a 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 rain water can flow out and drain the roof surface. Scuppers can hook up to a downspout, or could be extended to make sure that water is guided off of the structure sides and foundation.

Interior Roof Drains


There are many kinds of inner drains for flat roofs. They are installed at low places on the roof and attach to inner drainage pipes that drive water outdoors or into a sewer system. Many versions of inner roof drains have domes, strainers or covers that keep debris from clogging the roof drain pipe. These types of drains work via gravitational force channeling 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 efficient alternative to gravity drainage. Traditional flat roof drainage permits both air and water to go into the drain system producing pipe space occupied by both air and water. By incorporating an engineered baffle to the sump of the drain system it produces a siphonic drain which removes 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 portion of the drain is set up which draws water off the roof siphonically. Although used primarily for flat roofs, siphonic drains can also be installed on angled roofs.

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