Run On Flat Roof

It s affordable and easy to build.

Run on flat roof.

A correctly build flat roof will drain the rainwater quickly and effectively into the gutters without allowing water to collect in depressions and pond on the surface of the roof leading to the build up of silt deposits on the roof and stresses in the membrane when the water freezes a small amount of ponding is inevitable and it should not reduce the. Particularly with commercial roofs there s more of a chance for them to be flat because that is the most common design. Flat roof drainage. However flat roofs are not really flat.

Water does not run off of it very easily. So most flat roofs have at least a little slope either towards one or more roof edges or towards roof drains. They would be more accurately called low slope roofs. Occasionally a new flat roof will be required to replace an old roof.

To avoid ponding and leaks flat roofs typically have a nominal drainage slope of 2 to 4. It is a simple and cost effective method to use for certain commercial construction buildings like warehouses. There s a problem with flat roofs. Using a lean to flat roof allows water to run easily away from the building into new gutters which can be connected to existing drainage systems or even new soakaways.

So flat roofs are really low slope roofs most of the time. While a flat roof appears to be level a minimum slope is required to allow water to drain off. Flat roof examples see membrane single ply roofs.