Framing Gable Roof Rafters

Framing a gable roof building a gable with barge end purlin struts and collar ties.

Framing gable roof rafters.

Before you cut your boards you ll need to measure the width of your building and calculate the exact length of each rafter. The roof rafters provide integral structural support to the roof. Gable roof framing calculator plan diagram with full dimensions for a good straight fascia add an extra inch or 2 to the tails of all your rafters total length. After they re up you can snap a line to mark and trim the tails in a nice straight line to make up for any ridge warp or marking cutting and fixing errors.

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 measure down y height from the long point of the rafter cut and make a mark. This will the first point of the rafter measurement line using the results of your rafter length calculation measure from this point along the rafter measurement. 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 picture above shows the plan view of a gable roof ladder trusses are made up using four noggins bridging at each corner to support a rafter outside the building.

Roof framing rafter layout.