At this time there are a number of distinct types of roof drains and roof drain pan in Leeds, AL and each one is an unique approach to the variety of roof styles and their drainage concerns. You must take into consideration the kind of roof, its size, and the roof pitch to be able to choose the correct drain. You also need to take into consideration the location of the drain, what amount of rainwater is anticipated and safety when choosing a roof drain for a residence or business building. Gable, dormer, mansard and hip roofs shed rainwater water thanks to gravity. Flat roofs, on the other hand, collect water. Unless this water is directed out and away from the roof structure, it will most likely create pools that may inevitably leak and the amassed weight will subsequently cause structural damage. That is the reason that roofs with a pitch of below 2% ought to have roof drains located at the lowest areas on the roof where water pools and need to be evenly spread all throughout the roof surface.
Roof Drain Types
There are a number of distinct alternatives of roof drains. They basically fall into 2 groups: flat roof drains and pitched roof drains. Pitched roof rainwater drains normally comprise gutters that collect rainwater that passes by means of gravity down to the roof periphery. Gutters channel this water towards downspouts which route the water flow down and away from the building or in to sewers. Flat roof drains are one of three primary types: scuppers, inner drains or siphonic drains.
Roof Rainwater Drain Scuppes
Scuppers are situated on a roof's periphery. 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 extended to make sure that water is directed off of the structure sides and foundation.
Interior Roof Drains
There are quite a few different types of inner drains for flat roofs. These are installed at low spots on the roof and attach to interior drainage pipes that drive water outdoors or into a sewer system. Many designs of internal roof drains have domes, strainers or covers that keep trash from blocking the roof drain pipe. These types of drains work via gravity channeling pooling water thru the roof drain system. They can be constructed from PVC, cast iron or cast aluminum.
Siphonic Roof DrainsSiphonic roof drains are a more effective substitute for gravity drainage. Conventional flat roof drainage permits both air and water to enter the drain system producing pipe space occupied by both air and water. By incorporating an engineered baffle to the sump of the drain system it produces a siphonic drain that eliminates air from the system and permits smaller sized pipe diameters . When all air is eliminated, a negative air pressure in the tail piece of the drain is established which draws water off the roof siphonically. Although used primarily 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 pan in and around Leeds, Alabama, give us a call. We'd be glad to help.