Roof Drains


There are several distinct kinds of roof water drains and roof drain downspout in Clanton, AL and each one is an unique approach to the variety of roof styles and their drainage concerns. You must consider the type of roof, its dimensions, and its roof pitch to be able to pick the correct drain. You also need to take into account the site of the drain, how much rainwater is anticipated 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 gravity. Flat roofs, conversely, collect water. Unless this water is guided out and away from the roof structure, it will develop pools that could inevitably leak and the amassed weight may eventually result in structural damage. That is why roofs with a pitch of below 2% should have roof drains positioned in the lowest spots on the roof where water pools and should be evenly spread throughout the roof surface.

Roof Drain Kinds


There are several different 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 collect rainwater which travels via gravity down to the roof periphery. Gutters transport this water in the direction of downspouts which direct the water flow down and away from the building or in to sewer lines. Flat roof drains can be one of three primary types: scuppers, inner drains or siphonic drains.

Roof Rainwater Drain Scuppes


Scuppers are located on a roof's periphery. They 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 flow out and drain the roof surface. Scuppers can connect to a downspout, or can be lengthened to make sure that water is directed off of the building sides and foundation.

Inner Roof Drains


There are quite a few different types of inner drains for flat roofs. They are installed at low areas in the roof and attach to inner drainage pipes that route water outside or into a sewer system. Several versions of internal roof drains have domes, strainers or covers which prevent trash from obstructing the roof drain pipe. These types of drains work via gravity channeling pooling 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 efficient alternative to gravity drainage. Traditional flat roof drainage permits both air and water to enter the drain system creating 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 which eliminates air from the system and permits smaller sized pipe diameters . When all of the air is eliminated, a negative air pressure in the tail piece of the drain is set up which attracts water off the roof siphonically. Although used mainly 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 downspout in and around Clanton, Alabama, give us a call. We'd be glad to help.