Roof Drains


There are a number of distinct kinds of roof drains and roof drain pan in Clanton, AL and each is a specific answer to the variety of roof styles and their drainage challenges. You must consider the kind of roof, its dimensions, and its roof pitch to be able to select 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 drain for a residence or commercial building.

Gable, dormer, mansard and hip roofs shed rainwater water due to gravity. Flat roofs, conversely, collect water. Unless this water is directed out and away from the roof , it will most likely create pools that could inevitably leak and the amassed weight will subsequently cause compromising the integrity of the structure. That is the reason that roofs with a pitch of less than two percent should have roof drains positioned at the lowest spots on the roof where water puddles and need to be uniformly spaced all throughout the roof top.

Types of Roof Drains


There are several different alternatives of roof drains. They basically fall into two groups: flat roof drains and pitched roof drains. Pitched roof drains usually comprise gutters which accumulate rainwater that passes by means of gravity down to the roof edge. Gutters transport this water towards downspouts which route the water flow down and away from the building or into sewers. Flat roof drains can be one of three main types: scuppers, inner drains or siphonic drains.

Roof Rainwater Drain Scuppes


Scuppers are situated on a roof's periphery. Scuppers can also be put in on a balcony or terrace. Small openings are cut in the side of the roof structure so water can empty and drain the roof top. Scuppers can attach to a downspout, or could be lengthened to make sure that water is directed away from the structure sides and foundation.

Interior Roof Drains


There are quite a few different 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 outdoors or into a sewer system. Many versions of inner roof drains have domes, strainers or covers which prevent debris from clogging the roof drain pipe. These kinds of drains work via gravity funneling standing 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 efficient alternative to gravity drainage. Standard flat roof drainage permits both air and water to enter the drain system creating pipe space which is occupied by both air and water. By incorporating an engineered baffle to the sump of the drain system it creates a siphonic drain which eliminates air from the system and permits 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 set up which attracts water off the roof siphonically. Though 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 pan in and around Clanton, Alabama, give us a call. We'd be glad to help.