Flat Roof Balcony Drainage

A rooftop garden or additional outside living space are the top reasons people choose flat roofs.

Flat roof balcony drainage.

The most critical of these issues is the flat roof drainage systems. Along with the benefits of a flat roof come unique challenges. Syphonic drainage systems operate with specially designed flat roof drains which unlike gravity drainage systems are configured to work with completely full pipes degree of fill h d 1 0. The drainage system of any roof can be located at the edge or in the middle of the roof.

Discount roof drains and deck drains we carry all types of roof drains re roof drains overflow drains retrofit drains balcony drain deck drains floor drains roof drain accessories and scupper drains as well as replacement roof drain parts our drain solutions include both commercial and residential drains from leading suppliers like jdr j drain lsp marathon olyflow olympic. The key is in the word flat. Calculate drains needed. What s the difference between a regular roof and a flat roof and why does it require different material.

To design a sloped or flat roof drainage system we need to know the anticipated maximum rainfall rate and the flat or projected roof area. Building regulations any water collecting on a balcony deck either from rainfall or from watering container plants should be addressed in the design of the balcony to ensure it doesn t. 6 24 2014 david howard aia said. On top of that pooling water on a flat roof is a cumulative problem the longer it remains the bigger the affected area gets.

This table is based on zurn s roof drain vertical requirement for horizontal roof areas at various rainfall rates table. When a roof is flat it actually will have a very slight slope water is going to spend a lot more time in one place giving it more time to find a way underneath the roof surface and into the structure. The result is the number of drains needed. For a large roof it is recommended to have drains placed at multiple locations within the area of the roof.

Your building and location can help determine which drain will fit your roof needs. Concrete balconies for example tend to be treated like a flat roof and are normally finished with a waterproof membrane drainage outlet or overflow pipe. Parking deck drainage balcony and terrace drainage facade drainage pipe systems contents syphonic drainage. Aco jet flat roof drain for syphonic drainage.

Flat roof drainage options. The above sizing data is offered as a guide only. The petitioner seeks a declaratory statement requesting clarification of whether new roof coverings can be installed over the existing coverings of a town home built in 1984. Take the roof s total square footage and divide by the total square footage handled by one drain.

Below are the five best roof drains for flat roofs. There are a few ways to make sure water drains away from the surface of a flat roof. Increasing the angle of a flat roof will always increase the speed of water movement across the surface.