A gravity drainage system on a flat roof differs from the gutter system you find on residential roofs in two key ways.
Flat roofing drains.
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The most critical of these issues is the flat roof drainage systems.
On top of that pooling water on a flat roof is a cumulative problem the longer it remains the bigger the affected area gets.
Or 12 drains required.
Flat roofing does not drain naturally like sloped roofs that can rely on the force of gravity to remove water.
There are a few ways to make sure water drains away from the surface of a flat roof.
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Below are the five best roof drains for flat roofs.
Most flat roofs suffer from poor drain locations or drain levels that are high.
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The result is the number of drains needed.
Gutters are often a viable option for flat roofs directing water on the outside of the structure to downspouts.
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Water moves from these drains often at the center of the roof and into an integral drainage system of pipes.
A flat roof may use interior drains to collect water from the centre of the roof.
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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 rooftop garden or additional outside living space are the top reasons people choose flat roofs.
Take the roof s total square footage and divide by the total square footage handled by one drain.
Flat roof drainage options.
On many occasions drains are too high and water cannot flow off.
Pooling of water on the roof that can eventually lead to leaks or structural damage.
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Along with the benefits of a flat roof come unique challenges.
Your building and location can help determine which drain will fit your roof needs.
If these roofing types are not fitted with a proper drainage solution they will experience poor drainage which leads to the following issues.
When designing a roof it is essential to pay close attention to where the drains are.
Of course the best designed flat roof has the correct amount of pitch to drain the water off naturally.
