Flat Style Roof Drainage System

There are a few ways to make sure water drains away from the surface of a flat roof.

Flat style roof drainage system.

This applies for rain falling vertically or if it falls at an angle when blown by the wind. An interior drainage system makes use of several drains spaced across the surface of the roof most commonly near its center. Internal drains constitute a common drainage system is most commercial buildings. Of course the best designed flat roof has the correct amount of pitch to drain the water off naturally.

The drainage pipes are placed under the roof and in the. The most critical of these issues is the flat roof drainage systems. In the case of flat roofs the catchment area is the same as the footprint area of the roof being drained. 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.

A gravity drainage system on a flat roof differs from the gutter system you find on residential roofs in two key ways. Each of these systems has its own pros and cons. One of the most overlooked items on a flat roof is the draining system. Inner drains are resistant to freezing but can require careful maintenance to prevent problems.

These drains are like the drain at the bottom of your shower except that the roof drain has a larger strainer to protect it from debris. 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. Drainage ditches are created in the roof in the lower insulated areas. The maximum rainfall rate anticipated in the area where the building is located the flow in liters per minute per square meter for some x number of minutes.

The main benefit of inner drains is that the system is hidden from view. Flat roof drainage options. A flat roof may use interior drains to collect water from the centre of the roof. On flat or low slope roofs that drain to one end lower right in the sketch especially if the building rear wall does not include a projecting eave or soffit a clogged gutter or downspout send water down the building rear wall flooding the structure through its wall or through windows.

There are roof coating products available if there isn t enough slant or slope to accomplish this. These ditches guide water toward the eavestroughs. There are three types of drain systems commonly used on flat roofs. To design a sloped or flat roof drainage system we need to know several things.

More attention should be given to the location of a drainage system to avoid future problems. There are three types of flat roof drainage systems available in the market. Your building and location can help determine which drain will fit your roof needs.