Residential Flat Roof Construction Details

Flat roof construction for residential.

Residential flat roof construction details.

Some roofs actually slope in several directions ensuring optimal water runoff. Posts or columns in basements and cellars or exposed to the weather are supported by concrete piers or pedestals projecting at least 1 inch above concrete floors or decks and 6 inches above exposed earth. However over the last few decades new and advanced materials have been developed. Flat roof designs are quite common in residential buildings.

A roof is considered to be flat when it is of a slope of 1 5 o to the horizontal. Many slope in several directions like squashed hip roofs toward scupper holes that connect to downspouts. Most details linked to our building regs specifications. A classic flat roof is either almost completely level or has a very slight pitch of 3 in 12 inches or less.

Most flat roofs are typically not as long lasting or durable as sloped ones because the latter shed snow and rain a lot quicker. Waterproof membrane to prevent water penetrating the structure and interior of the building. This design is often incorporated to add to the beauty of the house. A flat roof usually consists of the following.

You can go for an extended roof that covers a few feet outside the external walls of the house. Flat roofs are always built at a slight incline at least 1 8 inch per foot. Flat roofs come in many shapes and sizes which include parapet roofs roof decks and green roofs to name just a few of the options available. 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.

From there the flat roof system you choose will determine the materials you apply. New detail drawings here including mansard roof edge box gutter parapet wall window frame window sill window lintel joist hangers joist built into wall hearth drainage pipes pipe through wall stairs and loft stairs. 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. There is no great architectural splendour in these roofs.

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. Flat garage roof design. Pres sure treated or naturally durable wood species are used. Ultimately a flat roof should play a part in a total architectural composition and has the ability to enhance the aesthetic and practical outcomes of a home.

When framing a flat roof you will need to create a slight incline. Although flat roofs are cheaper to build than pitched roofs they have a shorter life span.