Roof Drains


There are a few distinct types of roof drains and roof drain downspout in Jasper, AL and each one is an unique approach to the variety of roof types and their drainage challenges. You need to think about the kind of roof, its dimensions, 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 safety when choosing a roof drain for a home or commercial structure.

Gambrel, dormers, hip and gable roofs shed rainwater water thanks to gravitational force. Flat roofs, alternatively, collect rain water. Until this water is routed out and away from the roof , it will most likely develop pools of water that could inevitably leak and the amassed weight will subsequently result in damage to the structure. That is the reason that roofs with a slope of under 2% should have roof drains situated in the lowest spots on the roof where water puddles and need to be uniformly spaced all throughout the roof top.

Kinds of Roof Drains


There are several different alternatives of roof drains. They basically fall into 2 categories: flat roof drains and pitched roof drains. Pitched roof rainwater drains normally comprise gutters that collect rainwater which travels via gravity to the roof edge. Gutters transport this water towards downspouts which route the water flow down and far away from the structure or into sewer lines. Flat roof drains are one of three primary types: scuppers, inner drains or siphonic drains.

Roof Drain Scuppers


Scuppers are situated on the roof's perimeter. They can also be installed on a balcony or terrace. Small holes are cut into the side of the roof structure so water can flow out and drain the roof top. Scuppers can hook up to a downspout, or can be lengthened so that water is guided off of the structure sides and foundation.

Inner Roof Drains


There are quite a few different kinds of inner drains for flat roofs. They are positioned at low areas in the roof and connect to inner drainage pipes that direct water outside or into a sewer system. Many styles of internal roof drains have domes, strainers or covers which prevent trash from blocking the roof drain pipe. These kinds of drains work via gravitational force channeling standing water through the roof drain system. They can be made of PVC, cast iron or cast aluminum.

Siphonic Roof Drains

Siphonic roof drains are a more effective substitute for gravity drainage. Standard flat roof drainage allows both air and water to enter the drain system producing pipe space which is occupied by both air and water. By incorporating an engineered baffle to the sump of the drain system it produces a siphonic drain that removes air from the system and permits smaller pipe diameters . When all air is eliminated, a negative air pressure in the tail portion of the drain is set up which draws water off the roof siphonically. Though used primarily for flat roofs, siphonic drains can also be installed on angled roofs.

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