At this time there are a few different varieties of roof water drains and roof drain strainer in Oxford, AL and each is a specific approach to the wide range of roof styles and their drainage issues. You must take into consideration the type of roof, its size, and its roof pitch to be able to choose the correct drain. You also need to take into account the location of the drain, how much rainwater is expected and safety when choosing a roof water drain for a house or business structure. Gable, dormer, mansard and hip roofs shed rainwater water because of gravitational force. Flat roofs, on the other hand, collect water. Until this water is directed out and away from the roof , it will most likely create pools that may inevitably leak and the accumulated weight will subsequently cause damage to the structure. That is why roofs with a slope of below 2% ought to have roof drains situated in the lowest places on the roof in which water pools and need to be uniformly spread all throughout the roof top.
Kinds of Roof Drains
There are several distinct alternatives of roof drains. They generally fall into two groups: flat roof drains and pitched roof drains. Pitched roof rainwater drains usually consist of gutters that accumulate rainwater which travels via gravity to the roof edge. Gutters transport this water in the direction of downspouts which steer the water flow down and far away from the structure or into sewers. Flat roof drains can be one of three main types: scuppers, inner drains or siphonic drains.
Roof Rainwater Drain Scuppes
Scuppers are situated on a roof's perimeter. 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 empty and drain the roof top. Scuppers can attach to a downspout, or could be lengthened so that water is guided off of the structure sides and foundation.
Inner Roof Drains
There are many types of inner drains for flat roofs. These are positioned at low areas on the roof and attach to interior drainage pipes that drive water outdoors or into a sewer system. Several models of inner roof drains have domes, strainers or covers which keep trash from blocking the roof drain pipe. These types of drains work via gravitational force funneling pooling water thru the roof drain system. They are made from PVC, cast iron or cast aluminum.
Siphonic Roof DrainsSiphonic roof drains are a more effective alternative to gravity drainage. Conventional 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 body it produces a siphonic drain that removes air from the system and permits smaller sized pipe diameters . When all air is removed, a negative air pressure in the tail piece of the drain is set up which pulls water off the roof siphonically. Though used primarily 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 Oxford, Alabama, give us a call. We'd be glad to help.