However moisture has a way of finding its way into a structure.
Osb for shed roof.
Standard asphalt shingles do an excellent job keeping the weather out.
Good enough for houses good enough for a shed.
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.
Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones.
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.
The osb thickness will be based on the rafter spacing.
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.
This is a type of engineered particleboard made specifically for covering the roof of a shed or dwelling.
Using oriented strand board osb for shed walls floors and roofs.
Plywood with similar propertiescurrently costs about 30 more for an equivalent thickness.
Osb is fine all the way around.
Using oriented strand board is a tested way of reducing costs for building your shed.
However there are some sceptics out there who doubt the strength and durability of osb.