Gable Roof Ridge Board

Because the ridge board is a smaller member typically only an inch thick sometimes even less it is not a structural member and doesn t carry the gravity load.

Gable roof ridge board.

That rafter outside forms the overhang for the barge boards to fix to and so the soffit boards and ventilation are continuous all the way. Its only job is to provide a connection point for the roof joists on each side of the roof. Putting it together is relatively straight forward if you have basic carpentry skills and use precise measurements. The ridge board runs the length of the building and provides support for the tops of the rafters helping the whole roof structure work together as a system.

Ridge beam sizing is based on the span of the beam between supports and the amount of roof load supported by the beam. Before you cut your boards you ll need to measure the width of your building and calculate the exact length of each rafter. To build your gable roof you ll need wooden boards cut into joists rafters supports and a ridge board in addition to sheathing felt paper and shingles. Framing a gable roof building a gable with barge end purlin struts and collar ties.

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. 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. Ridge beams are required by code if the roof slope is less than 3 in 12 irc section r802 3. The ridge board must be set as perfectly as possible so take your time and use careful measurements.

If you re framing a gable roof on a new house or building a shed or even a doghouse with a gable roof you ll need to cut a number of roof rafters. In part 3 of our roof framing series we cover how to select a ridge board how to layout a ridge board how to mark it so you know where to fasten the raft. 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. Ridge board the engineering principles of the ridge board are a bit more complicated.

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. A gable roof is a simple symmetrical triangular roof. A ridge board is a non structural member that serves as a prop for opposing rafters to rest against and connect to.