Roof Drains


At this time there are a number of distinct types of roof drains and roof drain dome in Prattville, AL and each one is a specific approach to the wide range of roof types and their drainage concerns. You must take into consideration the kind of roof, its size, and its roof pitch to be able to choose the correct drain. You also need to think about the site of the drain, how much rainwater is anticipated and safe practices when choosing a roof water drain for a house or commercial building.

Gable, dormer, mansard and hip roofs shed rainwater water because of gravitational force. Flat roofs, on the other hand, collect water. Until this water is directed out and away from the flat roof , it will most likely develop pools that may eventually leak and the amassed weight may subsequently result in structural damage. That is why roofs with a pitch of below 2% ought to have roof drains situated in the lowest places on the roof in which water pools and should be evenly spaced throughout the roof surface.

Roof Drain Kinds


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 comprise gutters which collect rainwater which passes via gravity down to the roof periphery. Gutters transport this water towards downspouts which route the water flow down and far away from the structure or into sewers. Flat roof drains are one of three main types: scuppers, inner drains or siphonic drains.

Roof Drain Scuppers


Scuppers are located on the roof's periphery. Scuppers can also be put in on a balcony or terrace. Small holes are cut in the side of the roof structure so that rain water can flow out and drain the roof top. Scuppers can connect to a downspout, or could be lengthened to make sure that water is guided off of the structure sides and foundation.

Interior Roof Drains


There are many kinds of inner drains for flat roofs. They are positioned at low places in the roof and attach to interior drainage pipes that route water outdoors or in to a sewer system. Several designs of internal roof drains have domes, strainers or covers that keep trash from clogging the roof drain pipe. These types of drains operate via gravitational force funneling standing 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 effective alternative to gravity drainage. Traditional flat roof drainage permits both air and water to go into the drain system creating pipe space occupied by both air and water. By adding an engineered baffle to the sump of the drain system it produces a siphonic drain which removes air from the system and permits smaller sized pipe diameters to be used. When all air is eliminated, a negative air pressure in the tail portion of the drain is set up which draws 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 dome in and around Prattville, Alabama, give us a call. We'd be glad to help.