How Thick Osb For Shed Roof

The osb thickness will be based on the rafter spacing.

How thick osb for shed roof. Plywood with similar properties currently costs about 30 more for an equivalent thickness. A viable alternative to plywood this osb board is engineered to prevent any cupping warping or splitting. The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. Osb may have greater shear strength the ability to span distances than comparable thickness of plywood.

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 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. 18mm was initially chosen for its strength. Why waste ply on a roof unless its rough shuttering ply 12mm wbp is perfectly fine if your feeling really tight osb 3 aka stirling board will do the trick i figured hardwood plywood would be a better choice since it s more substantial.

Structurally osb and plywood are very similar in strength and ability to hold nails or screws. Using oriented strand board is a tested way of reducing costs for building your shed. 7 16 will be fine for 16 on center and 5 8 for 24 on center rafters. 8 tips for getting the best out of your oriented strand board osb how to install roof sheathing pro builder.

Oriented strand board osb is a material with high mechanical properties that make it particularly suitable for load bearing applications in construction. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. With this thickness any deflection under dead loads only the weight of materials only should prove to be imperceptible. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended.

Good enough for houses good enough for a shed. It will support roof. With edge support and the same snow load 3 8 inch osb can be used. Plywood shed flooring is usually 3 4 inch and osb 5 8 inch thick.

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. However there are some sceptics out there who doubt the strength and durability of osb.