Osb is fine all the way around.
Osb for shed roof.
Sheets of 7 16 inch thick with no edge support can be used in an area where the snow load is 30 pounds per square foot.
7 16 will be fine for 16 on center and 5 8 for 24 on center rafters.
Thicknesses range from 5 16 to 3 4 inch and the proper one to use.
Underneath the shingles is osb sheathing.
Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb.
Good enough for houses good enough for a shed.
Standard asphalt shingles do an excellent job keeping the weather out.
However there are some sceptics out there who doubt the strength and durability of osb.
The thickness required by josh s circumstances are good for roof snow loads of up to 70 psf again spanning 24.
However moisture has a way of finding its way into a structure.
Using oriented strand board is a tested way of reducing costs for building your shed.
Using oriented strand board osb for shed walls floors and roofs.
Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones.
With edge support and the same snow load 3 8 inch osb can be used.
For the curious 7 16 osb has a span rating of 24 16 and with supports every 24 inches is good for a roof live load of 40 psf pounds per square foot with a 10 psf dead load.