Run On Flat Roof

Flat roof examples see membrane single ply roofs.

Run on flat roof.

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. The industrial age brought about economical building methods and the prevalence of flat roof construction. While a flat roof appears to be level a minimum slope is required to allow water to drain off. There s a problem with flat roofs.

So flat roofs are really low slope roofs most of the time. Flat roof drainage. Water does not run off of it very easily. It s affordable and easy to build.

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. It is a simple and cost effective method to use for certain commercial construction buildings like warehouses. They would be more accurately called low slope roofs. Getting water off a flat roof sounds like a tricky scenario.

So most flat roofs have at least a little slope either towards one or more roof edges or towards roof drains. Particularly with commercial roofs there s more of a chance for them to be flat because that is the most common design. However flat roofs are not really flat.