How To Drain Flat Roofs

The drainage system of any roof can be located at the edge or in the middle of the roof.

How to drain flat roofs. Roof drains for flat or low slope roofs come in a few standard types. A rooftop garden or additional outside living space are the top reasons people choose flat roofs. Unlike other roofing types that are slanted or sloped to allow water to drain automatically flat roofs need a built in drainage system to help remove moisture and debris. It works smoothly and has a scientific way to flush out roof water.

This drainage system allows minimal numbers of outlets and all the drains are connected to one single leader pipe. Your building and location can help determine which drain will fit your roof needs. Drainage ditches are created in the roof in the lower insulated areas. The greenslope roof ponding repair kit provides a lightweight inexpensive solution to flat roof ponding.

Flat roof drains scuppers gutters and drainage systems on flat roofs. For a large roof it is recommended to have drains placed at multiple locations within the area of the roof. Increasing the angle of a flat roof will always increase the speed of water movement across the surface. A siphonic roof drainage system helps pass water faster than other roof drainage systems and is commonly used for flat roofs.

One of the most overlooked items on a flat roof is the draining system. Challenges the drains must allow a large volume of water equal to the square footage of your roof times the number of inches of rain to drain quickly. These ditches guide water toward the eavestroughs. Poor drainage can lead to serious issues with flat roofing from leaks to structural damage.

The best type for the application depends on several factors such as the size and slope of the roof the desired appearance and how much regular maintenance the drain system might need. Ponding water on flat roofs reduces the roof s lifespan. Ensure your drains are the lowest points on your flat roof and you can avoid water infiltration and subsequent flat roof repair. Drainage helpers drainage helpers are a good option if you already have a good flat roof drain system but want to provide your system with the ability to move more water if need be.

Along with the benefits of a flat roof come unique challenges. More attention should be given to the location of a drainage system to avoid future problems.