Roof Decking Osb Or Plywood

A 4 8 sheet of plywood is 32 ft 2.

Roof decking osb or plywood.

If your roof has triangles and other shapes you ll need to use a calculator to find the square footage. Osb takes longer to get wet than plywood but also takes longer to dry out. Plywood is made with an odd number of layers for optimal strength and performance. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb.

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. One of the nice things about plywood is the variety of options you can buy. Thicknesses range from 5 16 to 3 4 inch and the proper. You can consider them equal in terms of this aspect.

The thickness of plywood used for roof decking depends on the roof slope the spacing of rafters and the weight of other material to be put over the decking as well as the design load the. Home osb is about 700 less expensive compared with plywood if used as the subfloor sheathing and roof decking. In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood. When used as a roof sheathing this tendency to hold moisture means it can degrade faster than plywood when exposed to chronic leaks.

Osb is cheaper than plywood by about 3 to 5 per panel. 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 comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones. Once you have the area you can divide by the area of a sheet of plywood to find the number of sheets needed.

As a homeowner if you find yourself in this position know that when you install a new decking system you will have to decide between using plywood or osb. Cost of plywood vs osb. It dries out relatively quickly and the swelling is usually not enough to affect floor or roof finishes. For a typical 2 400 sq.

Don t let the size of osb sheathing deceive you. Roof sheathing or decking is one of those elements. Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should. Lipinskiy says that both plywood and osb are sufficient but that he does prefer osb.

So dividing the area of the roof by 32 will give you the number of. With edge support and the same snow load 3 8 inch osb can be used. There isn t much difference when we talk about the strength and durability of plywood and oriented strand board osb. They may look thicker but doesn t necessarily mean they re more durable than plywood.