Roof Drains


At this time there are a few different kinds of roof water drains and roof drain pipe in Opelika, AL and each one is an unique approach to the variety of roof styles and their drainage issues. You should take into consideration the kind of roof, its dimensions, and its roof pitch to be able to pick the correct drain. You also may want to think about the site of the drain, how much rainwater is expected and safety when selecting a roof water drain for a residence or business building.

Gable, dormer, mansard and hip roofs shed water thanks to gravitational force. Flat roofs, alternatively, collect water. Until the water is guided out and away from the flat roof , it will develop pools that may eventually leak and the amassed weight will subsequently result in structural damage. That is the reason that roofs with a pitch of under 2% ought to have roof drains positioned in the lowest places on the roof in which water puddles and should be evenly spaced all throughout the roof surface.

Roof Drain Kinds


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 consist of gutters that collect rainwater that passes by means of gravity down to the roof periphery. Gutters channel this water in the direction of downspouts which direct 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 Drain Scuppers


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

Interior Roof Drains


There are many types of inner drains for flat roofs. These are positioned at low spots on the roof and connect to inner drainage pipes that direct water outside or into a sewer system. Several designs of internal roof drains have domes, strainers or covers which prevent trash from blocking the roof drain pipe. These kinds of drains operate via gravitational force funneling pooling water thru the roof drain system. They can be 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 creating pipe space occupied by both air and water. By adding an engineered baffle to the sump of the drain system it produces a siphonic drain which eliminates air from the system and allows for smaller pipe diameters to be used. When all of the air is removed, a negative air pressure in the tail piece of the drain is established which draws water off the roof siphonically. Although used mainly for flat roofs, siphonic drains can also be installed on angled roofs.

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