Roof Drains


At this time there are several distinct types of roof drains and roof drain strainer in Killen, AL and each one is a specific approach to the wide range of roof styles and their drainage issues. You must think about the kind of roof, its dimensions, and the roof pitch to be able to pick the right drain. You also may want to take into consideration the location of the drain, what amount of rainwater is anticipated and safe practices when choosing a roof water drain for a house or business structure.

Gambrel, dormers, hip and gable roofs shed water due to gravitational force. Flat roofs, on the other hand, collect rain water. Unless the water is directed out and away from the roof structure, it will develop pools that may inevitably leak and the accumulated weight will eventually cause damage to the structure. That is the reason that roofs with a pitch of under 2% ought to have roof drains located in the lowest spots on the roof in which water puddles and need to be evenly spaced throughout the roof surface.

Roof Drain Kinds


There are a number of distinct variations of roof drains. They basically fall into two groups: pitched roof drains and flat roof drains. Pitched roof rainwater drains normally comprise gutters which collect rainwater which passes via gravity to the roof periphery. Gutters transport this water towards downspouts which direct the water flow down and far away from the building or into sewers. Flat roof drains are one of three primary types: scuppers, inner drains or siphonic drains.

Roof Drain Scuppers


Scuppers are located on the roof's perimeter. They can also be installed on a balcony or terrace. Small holes are cut in the side of the roof structure so rain water can flow out and drain the roof top. Scuppers can connect to a downspout, or could be lengthened to make sure that water is guided away from the building sides and foundation.

Inner Roof Drains


There are quite a few different types of inner drains for flat roofs. These are positioned at low spots on the roof and connect to interior drainage pipes that route water outdoors or in to a sewer system. Several designs of inner roof drains have domes, strainers or covers which keep debris from clogging the roof drain pipe. These kinds of drains operate via gravitational force channeling standing 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 efficient substitute for gravity drainage. Standard flat roof drainage permits both air and water to enter the drain system producing pipe space occupied by both air and water. By adding an engineered baffle to the sump of the drain body it produces a siphonic drain that eliminates air from the system and allows for smaller pipe diameters . When all of the air is eliminated, a negative air pressure in the tail portion of the drain is established which attracts rainwater 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 strainer in and around Killen, Alabama, give us a call. We'd be glad to help.