However moisture has a way of finding its way into a structure.
Osb for shed roof.
Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb.
7 16 will be fine for 16 on center and 5 8 for 24 on center rafters.
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.
Using oriented strand board osb for shed walls floors and roofs.
Standard asphalt shingles do an excellent job keeping the weather out.
Underneath the shingles is osb sheathing.
Good enough for houses good enough for a shed.
The thickness required by josh s circumstances are good for roof snow loads of up to 70 psf again spanning 24.
With edge support and the same snow load 3 8 inch osb can be used.
Osb is fine all the way around.
The osb thickness will be based on the rafter spacing.
Using oriented strand board is a tested way of reducing costs for building your shed.
Thicknesses range from 5 16 to 3 4 inch and the proper one to use.
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.
This is a type of engineered particleboard made specifically for covering the roof of a shed or dwelling.