Roof Drains


At this time there are a number of distinct kinds of roof water drains and cast iron roof drain in Attalla, AL and each is a specific answer to the wide range of roof types and their drainage issues. You should think about the kind of roof, its dimensions, and its roof pitch to be able to select the correct drain. You also need to think about the location of the drain, how much rainwater is anticipated and safety when choosing a roof water drain for a home or commercial building.

Hip roofs, dormers, gable and mansard roofs shed water thanks to gravitational force. Flat roofs, alternatively, accumulate rain water. Until the water is guided out and away from the roof , it will develop pools that may inevitably leak and the accumulated weight will subsequently result in damage to the structure. That is the reason that roofs with a pitch of under 2% ought to have roof drains located at the lowest spots on the roof in which water puddles and should be evenly spread all throughout the roof surface.

Types of Roof Drains


There are a number of distinct alternatives of roof drains. They basically fall into two categories: flat roof drains and pitched roof drains. Pitched roof rainwater drains normally comprise gutters that collect rainwater that travels via gravity down to the roof periphery. Gutters channel this water in the direction of downspouts which steer the water flow down and far away from the structure or in to sewer lines. Flat roof drains can be one of three main types: scuppers, inner drains or siphonic drains.

Roof Drain Scuppers


Scuppers are situated on a roof's perimeter. 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 empty 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 building sides and foundation.

Inner Roof Drains


There are quite a few different kinds of inner drains for flat roofs. They are installed at low areas in the roof and attach to interior drainage pipes that drive water outdoors or into a sewer system. Several designs of internal roof drains have domes, strainers or covers that keep trash from blocking the roof drain pipe. These types of drains operate via gravitational force funneling standing water thru 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. Traditional 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 system it creates a siphonic drain that eliminates air from the system and allows for smaller sized pipe diameters to be used. When all of the air is eliminated, a negative air pressure in the tail piece of the drain is established which draws water 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 Attalla, Alabama, give us a call. We'd be glad to help.