How to frame a gable roof. A standard triangular roof known as a gable roof is framed using rafters which are diagonal members that support the roofing materials. This will the first point of the rafter measurement line. The run or half the building span is the base of the triangle.
But a gable roof also requires some form of horizontal. Carry a gable end in and set it on the top plate upside down and backwards near the end wall. Use 8 penny nails to attach the first 2 in 4 in 51 cm 102 cm board to the wall studs.
Wall plates and joists set out the wall plates to whatever centers you need for your gable roof 400 450 600 or 900 governed by the weight of roof covering ie tiles and cutfix the joists so they are parallel to each other and flush with the back edge of the wall plates. In conventional gable roof framing the slope of the roof is formed by rafters that run diagonally downward from the peak of the roof to the tops of the exterior walls of the building. From one end of the rafter material using a speed square or framing square mark an x in 12 angle on the rafter and cut it.
Raise it up horizontally and hold it in place with a 24 resting on the floor in the center of the base piece and one at the top center of the truss. Trace the top of the joint so the angle is at the same degrees as where the rafters connect. Then use a saw to cut the lines that you drew.
And the line length measurement from the roof peak to the building wall is the hypotenuse. Top plates cannot be less than 2 in 51 cm thick. Gable roof step by step.
Roof framing rafter layout. Nail the first boards on top of your wall where you plan to build your roof. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle.
Set a ladder at the outside of both corners of the end wall. These pieces are known as the gussets.