Shed Roof Rafters 2x4 Or 2x6

The roof on this shed is a 4 in 12 slope which makes it a 18 and one half degree angle on the board ends.

Shed roof rafters 2x4 or 2x6.

Before you cut your boards you ll need to measure the width of your building and calculate the exact length of each rafter. Builders aren t bound by standard rafter spacing measurements. Will 2x4 rafters 24 inch on centre hold up my 8 x 12 shed. You then have rafters running down from this ridge board and resting on the top wall plates.

If you have a simple gable shed roof then using 2 4 rafters makes more sense unless you have a very large shed. A stick framed roof uses 2x4 s or 2x6 s or whatever you are framing with but has a ridge board running down the middle ridge line. The roof rafters provide integral structural support to the roof. A rafter or speed square will have marks for both of these angles.

I think you are overthinking it. But they do tend to space rafters in one of several industry standard increments typically. Build gables suspend ridge board install 2x6 rafters w proper birds mouths. The roof will have a 3 12 slope to match my garage.

2 x 6 will allow you to properly do soffit facia and overhang ladders. The ridge end of the rafter and often the eve end will need to be cut to the angle of the roof slope. If you have a single sloped shed roof then using 2 6 rafters is a better bet because the price differential won t be huge and your shed roof will have a much greater load capacity. A couple of joists or collar ties further up to stop spreading and you re done.

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. Im building a 8x12 shed. Sometimes the rafter will have a tail and extend out past the wall so that you have a soffit or overhang. Visit the roof framing page for more information on cutting roof rafters and visit the roof pitch calculator for determining rafter lengths based on rise and run.