Good enough for houses good enough for a shed.
How thick osb for shed roof.
Plywood shed flooring is usually 3 4 inch and osb 5 8 inch thick.
Using oriented strand board is a tested way of reducing costs for building your shed.
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.
For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended.
8 tips for getting the best out of your oriented strand board osb how to install roof sheathing pro builder.
The most common uses are for sheathing in walls flooring and roof decking.
Oriented strand board osb is a material with high mechanical properties that make it particularly suitable for load bearing applications in construction.
You need to find a sheathing with a span rating of at least 32 16 which means either 15 32 or 1 2 thick osb.
A viable alternative to plywood this osb board is engineered to prevent any cupping warping or splitting.
With this thickness any deflection under dead loads only the weight of materials only should prove to be imperceptible.
7 16 will be fine for 16 on center and 5 8 for 24 on center rafters.
The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that.
The osb thickness will be based on the rafter spacing.
Plywood with similar properties currently costs about 30 more for an equivalent thickness.
18mm was initially chosen for its strength.
Osb is fine all the way around.
However there are some sceptics out there who doubt the strength and durability of osb.
Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb.
It will support roof.
Structurally osb and plywood are very similar in strength and ability to hold nails or screws.
Osb may have greater shear strength the ability to span distances than comparable thickness of plywood.
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.