For standard shed roof rafter spacing see rafter span chart.
Shed roof rafters 2x4 or 2x6.
Rafter span tables use these tables to determine lengths sizes and spacing of rafters based on a variety of factors such as species load grade spacing and pitch.
Will 2x4 rafters 24 inch on centre hold up my 8 x 12 shed.
The roof will have a 3 12 slope to match my garage.
Im building a 8x12 shed.
Span calculator for wood joists and rafters also available for the android os.
Build gables suspend ridge board install 2x6 rafters w proper birds mouths.
A rafter or speed square will have marks for both of these angles.
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.
I think you are overthinking it.
There is no standard spacing it depends on what size of rafters you want to use and the span of your shed.
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.
For instance 2 grade 2x4s at 16 on center will span just over 9.
Also available for the android os.
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.
If you have a simple gable shed roof then using 2 4 rafters makes more sense unless you have a very large shed.
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.
A couple of joists or collar ties further up to stop spreading and you re done.
Will a 2x4 rafter 16 oc be fine or do i need to use 2x6 rafters.