Roof Drains


At this time there are a number of distinct types of roof drains and roof drain downspout in Fairfield, AL and each one is a specific approach to the variety of roof styles and their drainage challenges. You must look at the type of roof, its size, and its roof pitch to be able to select the right drain. You also need to take into consideration the site of the drain, how much rainwater is anticipated and safety when choosing a roof drain for a residence or commercial building.

Gable, dormer, mansard and hip roofs shed rainwater water thanks to gravitational force. Flat roofs, on the other hand, collect rain water. Until the water is directed out and away from the roof structure, it will most likely create pools of water that could inevitably leak and the amassed weight will eventually result in damage to the structure. That is the reason that roofs with a pitch of below two percent ought to have roof drains positioned in the lowest places on the roof where water puddles and need to be evenly spread all throughout the roof surface.

Roof Drain Kinds


There are several different alternatives of roof drains. They generally fall into 2 groups: pitched roof drains and flat roof drains. Pitched roof rainwater drains usually comprise gutters which collect rainwater which travels by means of gravity to the roof periphery. Gutters channel this water in the direction of downspouts which route the water flow down and far away from the structure or into sewer lines. Flat roof drains can be one of three main types: scuppers, inner drains or siphonic drains.

Roof Drain Scuppers


Scuppers are located on the roof's perimeter. They can also be put in on a balcony or terrace. Small openings 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 to make sure that water is directed away from 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 places in the roof and attach to interior drainage pipes that drive water outside or into a sewer system. Several models of inner roof drains have domes, strainers or covers which prevent trash from obstructing the roof drain pipe. These kinds of drains work via gravity channeling pooling water thru the roof drain system. They are made from 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 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 which removes air from the system and permits smaller pipe diameters to be used. When all air is eliminated, a negative air pressure in the tail piece of the drain is established which pulls rainwater off the roof siphonically. Though used mainly for flat roofs, siphonic drains can also be set up on pitched roofs.

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