Osb Or Plywood For Roof Sheathing

So dividing the area of the roof by 32 will give you the number of.

Osb or plywood for roof sheathing.

Once you have the area you can divide by the area of a sheet of plywood to find the number of sheets needed. Home osb is about 700 less expensive compared with plywood if used as the subfloor sheathing and roof decking. Thicknesses range from 5 16 to 3 4 inch and the proper. Plywood is made with an odd number of layers for optimal strength and performance.

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. Odds are that if you pass a housing development of wood framed houses it will have osb oriented strand board as exterior sheathing. It dries out relatively quickly and the swelling is usually not enough to affect floor or roof finishes. Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones.

If your roof has triangles and other shapes you ll need to use a calculator to find the square footage. With edge support and the same snow load 3 8 inch osb can be used. Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should. Get free shipping on qualified osb panel sheathing subflooring 7 16 plywood or buy online pick up in store today in the lumber composites department.

In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood. Osb v plywood which is best. When you count sub floors roofs and wall sheathing osb claims about 70 of the wood sheathing market in north america over plywood. Roof sheathing or decking is one of those elements.

Cost of plywood vs osb. When used as a roof sheathing this tendency to hold moisture means it can degrade faster than plywood when exposed to chronic leaks. For a typical 2 400 sq. One of the nice things about plywood is the variety of options you can buy.

A roof system consists of several elements working together to protect the home. Up until 2000 plywood held the majority of the market for wall roof and floor sheathing when it was surpassed by osb which as of 2018 held about 75 of the market share. Osb takes longer to get wet than plywood but also takes longer to dry out.