Flat Residential Roof Construction

A classic flat roof is either almost completely level or has a very slight pitch of 3 in 12 inches or less.

Flat residential roof construction.

However over the last few decades new and advanced materials have been developed. The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls. Many slope in several directions like squashed hip roofs toward scupper holes that connect to downspouts. Built up roof bur modified bitumen roof mbr and rubber membrane roof epdm.

Pros and cons for flat roof materials all three types of flat roofing cost 250 to 350 per square 100 square feet but prices vary according to region and size of the roof. Most flat roofs are typically not as long lasting or durable as sloped ones because the latter shed snow and rain a lot quicker. This will give additional stability to the roof structure. From there the flat roof system you choose will determine the materials you apply.

The most important thing to know about a flat roof says tom is that it s not flat to prevent water from pooling and eventually invading the home flat roofs are always built on a slight incline at least 1 8 inch per foot. For additional stability you can also use steel joists that are built into one or both of the walls. Underneath the basics flat roofs are usually constructed with a ceiling nailed to joists which support a deck usually wood in residential construction a vapor barrier insulation and a roof board.