Residential Flat Roof Framing

In general materials used on flat roofs cost less than ones used on sloped ones.

Residential flat roof framing.

Systemic load path with respect to roof framing connections particularly in the context of conventional wood framed homes. Pvc is 1 90 per sq foot. The engineering knowledge needed to cost effectively design homes or evaluate residential construction guidelines are lacking in this area. When framing a flat roof you will need to create a slight incline.

Modified bitumen and rolled asphalt roofs cost 1 30 2 20 per sq foot depending on the number of plies. Frame the roof photo by russell kaye 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. Flat roofs usually come with a 10 to 20 year warranty but can last 25 years if you build the roofs right and maintain them using commonsense rules. You can do this with a foam layer that exactly fits your roof.

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. Some roofs actually slope in several directions ensuring optimal water runoff. Depending on the span many different materials can frame a flat roof. Flat roofs are an often lower cost and easier to install alternative to traditional pitched roofs.

From there the flat roof system you choose will determine the materials you apply. Another common design in the northeast is the saltbox which is a gable roof with one longer side. Flat roofs are always built at a slight incline at least 1 8 inch per foot. 2x framing wood joists timber framing laminated beams steel concrete or sips.

They are common on extensions garages and commercial buildings. This will help you create a flat roof framing plan. Epdm is 1 50 per sq foot making it the cheapest single ply membrane. Shed gable hip gambrel and mansard.

It can be framed like a floor system with horizontal framing members at 16 19 or 24 o c. Roofs are basically five types. As opposed to old built up felt roofing with joins new single ply waterproof membranes are now most commonly used.