Roof Drains


At this time there are a number of distinct kinds of roof water drains and roof drain scupper in Fairfield, AL and each is a specific approach to the wide range of roof styles and their drainage concerns. You need to think about the kind of roof, its size, and the roof pitch to be able to pick the right drain. You also should take into consideration the site of the drain, what amount of rainwater is anticipated and safety when selecting a roof water drain for a house or business structure.

Gable, dormer, mansard and hip roofs shed water because of gravitational force. Flat roofs, on the other hand, accumulate rain water. Until the water is directed out and away from the flat roof , it will create pools that could eventually leak and the amassed weight will eventually cause structural damage. That is the reason that roofs with a slope of below two percent ought to have roof drains located in the lowest areas on the roof in which water pools and should be evenly spread throughout the roof top.

Kinds of Roof Drains


There are a number of distinct variations of roof drains. They basically fall into 2 groups: pitched roof drains and flat roof drains. Pitched roof drains normally comprise gutters that accumulate rainwater that passes via gravity to the roof periphery. Gutters channel this water towards downspouts which direct the water flow down and away from the structure or in to sewer lines. Flat roof drains are one of three main types: scuppers, inner drains or siphonic drains.

Roof Rainwater Drain Scuppes


Scuppers are situated on the roof's periphery. They can also be placed on a balcony or terrace. Small holes are cut into the side of the roof structure so that water can empty and drain the roof top. Scuppers can attach to a downspout, or could 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. They are installed at low spots in the roof and attach to interior drainage pipes that route water outdoors or into a sewer system. Many designs of inner roof drains have domes, strainers or covers which keep trash from clogging the roof drain pipe. These types of drains work via gravitational force channeling standing water thru the roof drain system. They are made of PVC, cast iron or cast aluminum.

Siphonic Roof Drains

Siphonic roof drains are a more efficient alternative to gravity drainage. Standard flat roof drainage permits both air and water to go into the drain system creating pipe space which is occupied by both air and water. By incorporating an engineered baffle to the sump of the drain body it creates a siphonic drain which eliminates air from the system and permits smaller pipe diameters to be used. When all air is removed, a negative air pressure in the tail portion of the drain is set up which draws rainwater off the roof siphonically. Although 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 scupper in and around Fairfield, Alabama, give us a call. We'd be glad to help.