Roof Drainage System Definition

Controlling rain is the single most important factor in the design and construction of durable buildings and in the control of mold.

Roof drainage system definition.

Roof drainage is one of the fundamental considerations of building design. If a scupper is part of the overflow system then it will be a few inches typically two inches above the roof surface. All exterior claddings pass some rainwater. Roof drainage system means components used to carry water off of a roof and away from a building or structure.

Middle east plastic pipe market to see rapid growth to 2020. Green roof solutions offers many different drainage layer options depending on system goals regarding water retention. The most critical role of the drainage layer is to provide an adequate flow of water off the roof during and after rainfall. The design of the different drainage layers allows for a portion of the stormwater to be retained above where the water is allowed to flow freely off of the roof.

Siding leaks brick leaks stucco leaks stone leaks etc. Usually scuppers are part of the backup drainage system that helps the roof shed excess stormwater. Inner drains are resistant to freezing but can require careful maintenance to prevent problems. In contrast a roof drain is a method of draining a roof assembly where the water runoff from the roof is transferred through the roof drain into piping that runs through the interior of the building before it empties either onto grade or into a storm sewer.

Inner roof drains are used on flat roofs and include a low section or channel that collects water and feeds it into a concealed drain that leads to an underground drainage system. A scupper is a drainage point on the edge of the roof. A drain that is installed within the roofing systems of a structure. From the very dawn of building construction it has been necessary to incorporate some method of gathering and discharging rainwater from the roof of a structure.

Roof drains are usually cast iron metal or a synthetic material that includes a grate to prevent solids branches debris to drain down the roofing drainage system. Drainage planes are used in the design and construction of building enclosures to control rain. The main benefit of inner drains is that the system is hidden from view. They are incorporated into the walls or parapet.

Normally roof drains are required in flat or semi flat roofs and not in pitched roofs.