Roof Drains


There are a number of different types of roof drains and roof drain strainer in Pinson, AL and each is an unique answer to the variety of roof types and their drainage issues. You should consider the type of roof, its size, and its roof pitch to be able to pick the right drain. You also should take into account the site of the drain, how much rainwater is expected and safe practices when choosing a roof drain for a house or commercial structure.

Gambrel, dormers, hip and gable roofs shed rainwater water thanks to gravitational force. Flat roofs, conversely, accumulate rain water. Unless the water is routed out and away from the flat roof , it will most likely create pools that may inevitably leak and the accumulated weight will subsequently cause damage to the structure. That is the reason that roofs with a pitch of below 2% ought to have roof drains located at the lowest places on the roof in which water puddles and need to be evenly spaced throughout the roof top.

Roof Drain Types


There are a number of different alternatives of roof drains. They basically fall into two categories: flat roof drains and pitched roof drains. Pitched roof drains usually consist of gutters which collect rainwater that travels by means of 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 into sewer lines. Flat roof drains are one of three primary types: scuppers, inner drains or siphonic drains.

Roof Rainwater Drain Scuppes


Scuppers are situated on the roof's perimeter. They can also be placed on a balcony or terrace. Small openings are cut into the side of the roof structure so water can empty and drain the roof top. Scuppers can hook up to a downspout, or can be lengthened to make sure that water is guided away from the building sides and foundation.

Inner Roof Drains


There are many kinds of inner drains for flat roofs. These are positioned at low places in the roof and connect to inner drainage pipes that route water outdoors or into a sewer system. Several models of inner roof drains have domes, strainers or covers which prevent trash from clogging the roof drain pipe. These kinds of drains work via gravitational force channeling pooling 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 effective alternative to gravity drainage. Traditional flat roof drainage permits both air and water to enter 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 system it creates a siphonic drain which removes air from the system and permits smaller pipe diameters . When all of the air is removed, a negative air pressure in the tail portion of the drain is set up which attracts water 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 Pinson, Alabama, give us a call. We'd be glad to help.