There are several different varieties of roof drains and roof drain strainer in Athens, AL and each is a specific solution to the wide range of roof types and their drainage concerns. You should take into consideration the kind of roof, its size, and the roof pitch to be able to pick the most suitable drain. You also should 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 structure. Gambrel, dormers, hip and gable roofs shed water because of gravitational force. Flat roofs, on the other hand, accumulate water. Unless this water is directed out and away from the roof structure, it will most likely develop pools of water that could inevitably leak and the amassed weight may subsequently result in compromising the integrity of the structure. That is the reason that roofs with a pitch of under 2% ought to have roof drains situated in the lowest spots on the roof in which water pools and need to be uniformly spaced all throughout the roof surface.
Types of Roof Drains
There are a number of different variations of roof drains. They generally fall into 2 categories: pitched roof drains and flat roof drains. Pitched roof drains usually comprise gutters which collect rainwater that travels by means of gravity to the roof periphery. Gutters channel this water towards downspouts which steer the water flow down and far away from the building or in to sewers. Flat roof drains can be one of three main types: scuppers, inner drains or siphonic drains.
Roof Rainwater Drain Scuppes
Scuppers are located on the roof's perimeter. Scuppers can also be installed on a balcony or terrace. Small holes are cut into the side of the roof structure so that rain water can flow out and drain the roof surface. Scuppers can hook up to a downspout, or can be extended to make sure that water is guided off of 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 connect to inner drainage pipes that drive water outside or in to a sewer system. Several styles of inner roof drains have domes, strainers or covers which keep trash from blocking the roof drain pipe. These types of drains work via gravity channeling pooling water through the roof drain system. They can be made from PVC, cast iron or cast aluminum.
Siphonic Roof DrainsSiphonic roof drains are a more efficient substitute for gravity drainage. Standard flat roof drainage allows 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 produces a siphonic drain which removes air from the system and permits smaller pipe diameters . When all 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 primarily for flat roofs, siphonic drains can also be installed on pitched roofs.
If you need more information about flat roof drain or roof drain strainer in and around Athens, Alabama, give us a call. We'd be glad to help.