Flat Roof Drainage System

Of course the best designed flat roof has the correct amount of pitch to drain the water off naturally.

Flat roof drainage system.

Scuppers internal drains gutters. This kind of drainage system is most common on small flat roofs where water volume and buildup isn t extreme. These ditches guide water toward the eavestroughs. They are often positioned towards the center of the roof or the place where the slope of the roof allows water to collect.

The most critical of these issues is the flat roof drainage systems. In most cases a flat roof will pitch in a single direction where gutters can then catch the runoff to remove it. The sketch at left common leak points at flat roof drainage systems. Typically flat roof drainage systems fall into one of the following categories.

The drainage pipes are placed under the roof and in the walls of the building. It s also sometimes used in tandem with scuppers. There are three types of drain systems commonly used on flat roofs. Your building and location can help determine which drain will fit your roof needs.

These drains are like the drain at the. Drainage ditches are created in the roof in the lower insulated areas. There are roof coating products available if there isn t enough slant or slope to accomplish this. Poor drainage can lead to serious issues with flat roofing from leaks to structural damage.

The one challenge with flat roofing is ensuring proper drainage. A flat roof may use interior drains to collect water from the centre of the roof. Internal drains constitute a common drainage system is most commercial buildings. A gravity drainage system on a flat roof differs from the gutter system you find on residential roofs in two key ways.

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. A residential roof collects water in the gutters and the.