Roof Drains


There are a number of distinct types of roof water drains and roof drain scupper in Montgomery, AL and each one is an unique solution to the variety of roof types and their drainage challenges. You need to take into consideration the kind of roof, its size, and its roof pitch to be able to select the right drain. You also should take into account the location of the drain, how much rainwater is expected and safety when choosing a roof water drain for a home or business building.

Gambrel, dormers, hip and gable roofs shed rainwater water thanks to gravity. Flat roofs, alternatively, accumulate rain water. Unless this water is routed out and away from the flat roof , it will most likely create pools of water that may eventually leak and the accumulated weight will eventually result in structural damage. That is the reason that roofs with a slope of less than two percent ought to have roof drains positioned in the lowest spots on the roof in which water pools and should be evenly spaced throughout the roof top.

Roof Drain Types


There are a number of different alternatives of roof drains. They basically fall into two categories: pitched roof drains and flat roof drains. Pitched roof drains normally consist of gutters which accumulate rainwater that travels by means of gravity to the roof periphery. Gutters direct this water towards downspouts which route the water flow down and away from the building or into sewers. Flat roof drains are one of three main types: scuppers, inner drains or siphonic drains.

Roof Rainwater Drain Scuppes


Scuppers are located on a roof's periphery. They can also be installed on a balcony or terrace. Small openings are cut into the side of the roof structure so that water can empty and drain the roof top. Scuppers can hook up to a downspout, or can be extended so that water is guided away from the building sides and foundation.

Interior Roof Drains


There are quite a few different types of inner drains for flat roofs. They are positioned at low areas in the roof and attach to inner drainage pipes that drive water outdoors or into a sewer system. Several versions of inner roof drains have domes, strainers or covers which prevent debris from obstructing the roof drain pipe. These kinds of drains work via gravitational force funneling standing water through the roof drain system. They can be made from PVC, cast iron or cast aluminum.

Siphonic Roof Drains

Siphonic roof drains are a more effective alternative to gravity drainage. Standard flat roof drainage permits both air and water to go into 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 body it creates a siphonic drain which removes air from the system and permits smaller pipe diameters to be used. When all of the air is eliminated, a negative air pressure in the tail piece of the drain is set up which pulls water off the roof siphonically. Though used mainly for flat roofs, siphonic drains can also be installed on pitched roofs.

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