Residential Modern Flat Roof Drainage

The one challenge with flat roofing is ensuring proper drainage.

Residential modern flat roof drainage. Surface subsurface slope downspout and gutters. To keep damage like leaks from occurring water should not stand on a flat roof for more than 48 hours. There are three types of drain systems commonly used on flat roofs. There are four main types of residential drainage systems.

Design load the water depth or build up would be limited to 3. Although not commonly used anymore the eavestrough drainage system is a good option if you have an older large industrial or commercial flat roof. This will keep the load down to approximately 15 lbs. This may make it less ideal for rainy or snowy climates.

Of course the best designed flat roof has the correct amount of pitch to drain the water off naturally. A gravity drainage system on a flat roof differs from the gutter system you find on residential roofs in two key ways. The engineer should lay out the roof drain system consistent with the structural design strength of the roof. The main benefit of inner drains is that the system is hidden from view.

These ditches guide water toward the eavestroughs. Poor drainage can lead to serious issues with flat roofing from leaks to structural damage. A flat roof may use interior drains to collect water from the centre of the roof. 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.

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. A major maintenance issue shared between all types of roof drains is debris removal. Normally for a flat roof with a 30 lb. Drainage ditches are created in the roof in the lower insulated areas.

Types of residential drainage systems. Our exclusive dual functional structural deck flange and combination roof drains streamline specifications saving installation time and labor. Each of these systems has its own pros and cons. For flat roof drainage where you place your drains scuppers and the final material of the roofing is more important.

There are roof coating products available if there isn t enough slant or slope to accomplish this. Your building and location can help determine which drain will fit your roof needs. The angle is not significant enough to prevent water from pooling on the surface. 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.

Roof drains watts roof drains provide flexible solutions for specifiers and installers in any commercial roof application.