Flat Roof Framing Details

You can do this with a foam layer that exactly fits your roof.

Flat roof framing details.

Flat roof construction for residential. Old asbestos roofs are often replaced with flat roofs. It is not ideal for snow or heavy rain but modern materials and proper drainage have helped. Flat roof types.

Sizes of joists needed for flat roof construction. Some observers suggest it s harder to replace a flat roof than a traditional pitched shingle roof because of the labor required to remove its layers especially on older flat roofs. This will help you create a flat roof framing plan. The rise or height of the roof at its peak is the altitude of the triangle.

See more ideas about flat roof roof roof construction. Think of a flattened hip roof. Yet for historic modern style buildings like this old house s cambridge tv project flat roofs are at the core of the architecture meant to reflect the broad horizontal lines of the natural landscape. A roof is defined in bs 6229 as a flat roof if it has a pitch of 10 degrees or less.

May 9 2017 explore bernice ohene s board flat roof construction on pinterest. A roof is considered to be flat when it is of a slope of 1 5 o to the horizontal. Of course you don t need to live in a modern house to deal with a flat roof. If you build a flat roof try to have it slope in multiple directions to drains or gutters.

Some roofs actually slope in several directions ensuring optimal water runoff. This could mean flat roofs may not raise the same red flags they used to. Flat roofs are always built at a slight incline at least 1 8 inch per foot. A flat roof must be strong durable and stable throughout its lifetime.

It must provide adequate protection against the elements keeping the buildings structure and interior dry. But now flat roofs often are constructed with fewer layers because of improved waterproofing technology. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle.

A flat roof has a slope of 1 8 per foot to 2 12. As you may imagine there is a fair amount of weight involved here in terms of boards felt etc. Although flat roofs are cheaper to build than pitched roofs they have a shorter life span. When framing a flat roof you will need to create a slight incline.

The run or half the building span is the base of the triangle.