There are some cases in building construction when having a flat rather than a pitched roof is better. For instance, if there is ducting on the roof that needs regular maintenance or rooflights that need cleaning being able to access the roof easily is an advantage.

Many companies choose a flat roof construction because it is a cheaper alternative to a pitched roof when it is constructed and has lower repair costs. Flat roofs assume less space and consequently use less material than sloped roofs. This makes initial construction cheaper but also means savings if any extensive repairs become necessary in the future.

In a domestic setting, some homeowners turn their flat roofs into rooftop gardens. Flat roofs are also ideal for roof deck construction allowing homeowners to make a sun terrace which with a rail fitted around for safety purposes may add value to a property.

Flat roofs are a fantastic way to reduce home energy costs, especially in warmer climates. Solar panels can be fitted more easily than on a sloped roof to provide hot water or electricity via an inverter.

Although the lifespan of a flat roof is shorter than a traditionally tiled sloped roof if constructed with a longer-lasting roofing material the flat roof can actually last longer.