Roof Drains


There are several different kinds of roof drains and cast iron roof drain in Clanton, AL and each is an unique solution to the wide range of roof styles and their drainage challenges. You must look at the type of roof, its size, and its roof pitch to be able to pick the correct drain. You also should take into consideration the site of the drain, what amount of rainwater is anticipated and safety when choosing a roof drain for a residence or business building.

Gambrel, dormers, hip and gable roofs shed water thanks to gravity. Flat roofs, on the other hand, accumulate rain water. Unless this water is directed out and away from the flat roof structure, it will create pools of water that may eventually leak and the amassed weight will eventually cause damage to the structure. That is the reason that roofs with a slope of less than 2% ought to have roof drains positioned at the lowest places on the roof where water puddles and need to be evenly spaced throughout the roof surface.

Roof Drain Kinds


There are several different alternatives of roof drains. They generally fall into 2 categories: flat roof drains and pitched roof drains. Pitched roof rainwater drains usually consist of gutters that accumulate rainwater that travels via gravity down to the roof periphery. Gutters transport this water in the direction of downspouts which route 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 the 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 water can flow out and drain the roof surface. Scuppers can connect to a downspout, or can be extended to make sure that water is directed off of the structure sides and foundation.

Interior Roof Drains


There are many types of inner drains for flat roofs. They are positioned at low places on the roof and connect to inner drainage pipes that route water outside or into a sewer system. Many styles of inner roof drains have domes, strainers or covers which keep trash from obstructing the roof drain pipe. These types of drains work via gravity funneling standing water thru 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 alternative to 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 adding 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 . When all of the air is removed, a negative air pressure in the tail portion of the drain is established which attracts rainwater off the roof siphonically. Though used primarily for flat roofs, siphonic drains can also be installed on pitched roofs.

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