Roof Drains


There are a number of distinct varieties of roof water drains and roof drain pan in Muscle Shoals, AL and each is an unique answer to the variety of roof types and their drainage issues. You should look at the type of roof, its dimensions, and the roof pitch to be able to choose the most suitable drain. You also need to think about the location of the drain, what amount of rainwater is expected and safety when selecting a roof water drain for a home or business building.

Gambrel, dormers, hip and gable roofs shed rainwater water thanks to gravitational force. Flat roofs, alternatively, accumulate rain water. Until this water is guided out and away from the flat roof , it will develop pools that could inevitably leak and the amassed weight will subsequently cause structural damage. That is the reason that roofs with a pitch of under 2% should have roof drains situated at the lowest spots on the roof where water pools and need to be uniformly spaced all throughout the roof top.

Types of Roof Drains


There are a number of distinct alternatives of roof drains. They generally fall into two groups: pitched roof drains and flat roof drains. Pitched roof drains normally comprise gutters that collect rainwater that travels by means of gravity down to the roof edge. Gutters transport this water towards downspouts which steer the water flow down and away from the building or into sewers. Flat roof drains can be one of three primary types: scuppers, inner drains or siphonic drains.

Roof Drain Scuppers


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 that water can flow out and drain the roof surface. Scuppers can connect to a downspout, or can be lengthened to make sure that water is guided off of the building sides and foundation.

Interior Roof Drains


There are many kinds of inner drains for flat roofs. They are positioned at low places on the roof and connect to interior drainage pipes that direct water outside or in to a sewer system. Several models of internal roof drains have domes, strainers or covers which keep trash from blocking the roof drain pipe. These types of drains work via gravity funneling standing water through the roof drain system. They can be made from PVC, cast iron or cast aluminum.

Siphonic Roof Drains

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

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