Flat Roof Water Drainage Systems

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.

Flat roof water drainage systems. Inner drains are resistant to freezing but can require careful maintenance to prevent problems. Commercial flat roofs need interior drains and scuppers to collect water instead. Your building and location can help determine which drain will fit your roof needs. The one challenge with flat roofing is ensuring proper drainage.

The drainage pipes are placed under the roof and in the. There must be some momentum for the water to move into the flat roof drainage system. A siphonic roof drainage system helps pass water faster than other roof drainage systems and is commonly used for flat roofs. Furthermore flat roofs with internal drainage are built to direct water to the central points of the structure with a concave shape the opposite of a pitched roof.

Of course the best designed flat roof has the correct amount of pitch to drain the water off naturally. As the roof collects rain the water must be transported quickly and safely away by a drainage system. This drainage system allows minimal numbers of outlets and all the drains are connected to one single leader pipe. This kind of drainage system is most common on small flat roofs where water volume and buildup isn t extreme.

A light rain or drizzle for example remain remain on a flat roof for a short period of time. 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. This would be in situations where a retaining wall or parapet prevents direct access to the roof s edge. The main benefit of inner drains is that the system is hidden from view.

This blog post looks closely at all three to help you discover the best drainage system for your property. It works smoothly and has a scientific way to flush out roof water. While pitched roofs can rely on gravity to move water flat roofs can t just rely on a typical gravity driven gutter system. The most critical of these issues is the flat roof drainage systems.

It s also sometimes used in tandem with scuppers. No roof should be entirely flat but rather should slope either toward the perimeter or toward an interior drainage system. There are three types of flat roof drainage systems available in the market. Along with the benefits of a flat roof come unique challenges.

Flat roof drainage system specifications designs troubleshooting problems solutions for interior drains on flat building roofs flat roof drains scuppers and screens questions answers about keeping the flat roof drainage system working or about installing new drains in a flat roof.