Roof Drains


At this time there are several distinct kinds of roof water drains and roof drain dome in Phenix City, AL and each is an unique solution to the variety of roof styles and their drainage challenges. You must take into consideration the type of roof, its size, and its roof pitch to be able to select the most suitable drain. You also need to take into consideration the site of the drain, how much rainwater is expected and safe practices when choosing a roof water drain for a house or commercial building.

Gable, dormer, mansard and hip roofs shed water thanks to gravity. Flat roofs, conversely, collect water. Unless the water is routed out and away from the flat roof structure, it will develop pools that may eventually leak and the accumulated weight will subsequently result in damage to the structure. That is the reason that roofs with a pitch of below 2% ought to have roof drains positioned at the lowest places on the roof in which water puddles and should be evenly spaced all throughout the roof top.

Roof Drain Types


There are several distinct variations of roof drains. They basically fall into two groups: flat roof drains and pitched roof drains. Pitched roof rainwater drains normally comprise gutters that collect rainwater which travels via gravity down to the roof edge. Gutters channel this water in the direction of downspouts which direct the water flow down and away from the building or into sewers. Flat roof drains can be one of three main types: scuppers, inner drains or siphonic drains.

Roof Drain Scuppers


Scuppers are located on a roof's periphery. Scuppers can also be put in on a balcony or terrace. Small holes are cut into the side of the roof structure so rain water can flow out and drain the roof surface. Scuppers can hook up to a downspout, or can be lengthened to make sure that water is guided off of the structure sides and foundation.

Interior Roof Drains


There are quite a few different kinds of inner drains for flat roofs. They are installed at low places on the roof and connect to interior 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 trash from clogging the roof drain pipe. These types of drains work via gravitational force funneling standing water through the roof drain system. They are made from PVC, cast iron or cast aluminum.

Siphonic Roof Drains

Siphonic roof drains are a more efficient substitute for gravity drainage. Traditional flat roof drainage permits both air and water to enter the drain system producing pipe space which is occupied by both air and water. By adding an engineered baffle to the sump of the drain system it produces a siphonic drain that removes air from the system and allows for smaller sized pipe diameters . When all air is removed, a negative air pressure in the tail piece of the drain is established which draws water off the roof siphonically. Though 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 dome in and around Phenix City, Alabama, give us a call. We'd be glad to help.