Roof Drains


There are a few distinct types of roof water drains and roof drain pvc in Jasper, AL and each one is an unique approach to the variety of roof types and their drainage issues. You should look at the kind of roof, its dimensions, and its roof pitch to be able to select the right drain. You also need to take into consideration the location of the drain, how much rainwater is expected and safe practices when choosing a roof drain for a house or business structure.

Gambrel, dormers, hip and gable roofs shed rainwater water because of gravity. Flat roofs, conversely, accumulate water. Unless the water is routed out and away from the flat roof , it will develop pools that could inevitably leak and the amassed weight may subsequently cause damage to the structure. That is why roofs with a slope of less than 2% ought to have roof drains situated in the lowest areas on the roof in which water pools and should be uniformly spaced throughout the roof surface.

Kinds of Roof Drains


There are several different variations of roof drains. They generally fall into 2 categories: flat roof drains and pitched roof drains. Pitched roof drains normally consist of gutters that collect rainwater that travels via gravity to the roof periphery. Gutters channel this water in the direction of downspouts which route the water flow down and away from the structure or in to sewers. Flat roof drains are 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 water can flow out and drain the roof top. Scuppers can attach to a downspout, or could be lengthened so that water is guided away from the structure sides and foundation.

Inner Roof Drains


There are quite a few different types of inner drains for flat roofs. They are installed at low places on the roof and attach to inner drainage pipes that route water outside or into a sewer system. Several models of inner roof drains have domes, strainers or covers which prevent trash from clogging the roof drain pipe. These kinds of drains work via gravitational force channeling pooling water through the roof drain system. They are made of PVC, cast iron or cast aluminum.

Siphonic Roof Drains

Siphonic roof drains are a more effective substitute for gravity drainage. Conventional flat roof drainage allows both air and water to go into the drain system producing pipe space occupied by both air and water. By incorporating an engineered baffle to the sump of the drain body it produces a siphonic drain which eliminates air from the system and allows for smaller sized pipe diameters . When all of the air is removed, a negative air pressure in the tail portion of the drain is set up which pulls water off the roof siphonically. Though used primarily for flat roofs, siphonic drains can also be installed on angled roofs.

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