Flat Roof Frame Construction

And the line length measurement from the roof peak to the building wall is the hypotenuse.

Flat roof frame construction.

Sizes of joists needed for flat roof construction. So any timber joists that are used need to be strong enough to support this weight. 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. Framing a roof is the last step in framing new construction.

The rise or height of the roof at its peak is the altitude of the triangle. The run or half the building span is the base of the triangle. While most home builders will outsource the construction of roofing trusses the rafter supports of the roof itself learning to frame a roof yourself is one of the true arts of carpentry and a basic primer is covered below. An example of each is shown in figure 2 1.

A flat roof usually consists of the following. Waterproof membrane to prevent water penetrating the structure and interior of the. A flat roof has a slope of 1 8 per foot to 2 12. Flat roof construction for residential.

It is not ideal for snow or heavy rain but modern materials and proper drainage have helped. It is the form most commonly used by. A roof is considered to be flat when it is of a slope of 1 5 o to the horizontal. Types of roofs the most commonly used types of pitched roof construction are the gable the hip the intersecting and the shed or lean to.

As you may imagine there is a fair amount of weight involved here in terms of boards felt etc. Old asbestos roofs are often replaced with flat roofs. Think of a flattened hip roof. One important and perhaps not so obvious fact is that a flat roof is not.

The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. Gable a gable roof has a ridge at the center and slopes in two directions. Below is an easy to follow manual for building flat roofs including a guide to flat roof framing and installation with plenty of details and specifications about the frame. Common types of roofs and basic framing terms.