Roof Rainwater Drainage Systems

The cistern typically located underground may be constructed of various materials including cinderblock reinforced concrete or precast concrete fiberglass or steel.

Roof rainwater drainage systems.

Siphonic drains typically cost more than other drain systems but they work smoothly and require relatively little maintenance. While pitched roofs can rely on gravity to move water flat roofs can t just rely on a typical gravity driven gutter system. The green roof solutions drainage conduit is a stainless steel channel for use with the aggredrain system. The 1 100 rain water catchment system.

That line eventually emptied into the low spot in the back yard. A system of gutters and downspouts directs the rainwater collected by the roof to the storage cistern. Where the tube passes by the downspout from the gutter we installed a y fitting and drained the roof water from the gutter system directly into the main drainage line. Rain gutters are the most common drain system in use for all types of roofs.

But don t let it scare you. Scuppers are the most effective drainage solution for flat roofs. With this system large square openings are made along the edge of the roof that shoot the water away from the side of the building. Because the siphoning force helps move the water siphonic drain systems can employ horizontal leaders instead of sloped pipes which rely on gravity alone for drainage.

High maintenance gutters need continual cleaning and. Once all the parts of the drainage system were installed we covered the tubes with several inches of rock. See french drains for details of handling roof runoff at flat or poorly drained sites. Inexpensive gutters are the easiest types of drain systems to get and install.

Can keep water from pooling and building up near the building foundation. Protects doorways and window openings. This is a large rainwater catchment system. Keeps water from pouring off of the roof in an uncontrollable manner.

Rainwater harvest calculator length. As the roof collects rain the water must be transported quickly and safely away by a drainage system. Commonly used on flat commercial roofs siphonic drains allow for a minimal number of drains and all of the drains can be connected to a single leader. Although they do have their benefits they also tend to be favored less due to several reasons.

Commercial flat roofs need interior drains and scuppers to collect water instead.