Roofing Framing Details

The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle.

Roofing framing details.

Needed to tie the roof together where the rafters are framed at an angle to each other. The framing style of the roof refers to the actual components of each roofing truss and the design of the structural foundation of that roof. The rafters carry the applied loads to the exterior walls. Overhangs hips and dormers add greatly to the complexity of the framing.

Roof framing can be simple or complex depending on the roof. Nearly all roofs are framed using one of two methods. Below is a sketch of the original roof wall structural details for this building. The run or half the building span is the base of the triangle.

Stick truss roof framing. Rafters act more like the top chord of a roof truss than as a roof joist. Standard stick framing or the newer truss framing. The rise or height of the roof at its peak is the altitude of the triangle.

The original roof was built using purlins beams extending between gable ends. Partially these will depend on the style of roof you ve selected but you ll also have some wiggle room depending on the design elements of the house. And the line length measurement from the roof peak to the building wall is the hypotenuse. The function of each component is.

In a rafter roof all of these components are required to provide a stable roof. Include roof pitch roof geometry slope length and climatic factors such as heavy snowfall or rainfall.