Inner drains gutters or scuppers each have their own function and deciding which system is best depends on.
How to drain a flat roof.
This system works by recessing insulation in installed drains to allow for faster water drainage.
A flat roof drain is one of the most important features of a flat roof design and they need to be taken care of.
More attention should be given to the location of a drainage system to avoid future problems.
The above sizing data is offered as a guide only.
To keep damage like leaks from occurring water should not stand on a flat roof for more than 48 hours.
They are ideal for climates that don t experience large quantities of rain and moisture.
Challenges the drains must allow a large volume of water equal to the square footage of your roof times the number of inches of rain to drain quickly.
The angle is not significant enough to prevent water from pooling on the surface.
The result is the number of drains needed.
A rooftop garden or additional outside living space are the top reasons people choose flat roofs.
The 3 most common drain systems of a flat roof.
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.
There are several drainage options to repair pooling or ponding water on flat roofs including internal drains gutters and downspouts scuppers and roof leveling compounds.
A flat roof drain can also fail by becoming detached from the roof.
Fitting the roof with one of the following systems to ensure proper drainage will help keep it protected.
Ensure your drains are the lowest points on your flat roof and you can avoid water infiltration and subsequent flat roof repair.
For flat roof drainage where you place your drains scuppers and the final material of the roofing is more important.
Ponding water on flat roofs reduces the roof s lifespan.
This table is based on zurn s roof drain vertical requirement for horizontal roof areas at various rainfall rates table.
Leaving your flat roof without a drainage system will greatly increase the risk of these issues.
Flat roof drains scuppers gutters and drainage systems on flat roofs.
The greenslope roof ponding repair kit provides a lightweight inexpensive solution to flat roof ponding.
Take the roof s total square footage and divide by the total square footage handled by one drain.
Flat roofs have unique architectural characteristics that make them desirable in many situations.
Calculate drains needed.
