Roof Decking Osb Or Plywood

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.

Roof decking osb or plywood.

There is nothing wrong with plywood but for me personally. Cost of plywood vs osb. A 4 8 sheet of plywood is 32 ft 2. Both plywood and osb will meet the code.

Osb is cheaper than plywood by about 3 to 5 per panel. Thicknesses range from 5 16 to 3 4 inch and the proper. Lipinskiy says that both plywood and osb are sufficient but that he does prefer 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.

Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones. Home osb is about 700 less expensive compared with plywood if used as the subfloor sheathing and roof decking. 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. With edge support and the same snow load 3 8 inch osb can be used.

Osb takes longer to get wet than plywood but also takes longer to dry out. One of the nice things about plywood is the variety of options you can buy. When used as a roof sheathing this tendency to hold moisture means it can degrade faster than plywood when exposed to chronic leaks. They may look thicker but doesn t necessarily mean they re more durable than plywood.

In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood. Plywood is made with an odd number of layers for optimal strength and performance. 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. Roof sheathing or decking is one of those elements.

You can consider them equal in terms of this aspect. For a typical 2 400 sq. So dividing the area of the roof by 32 will give you the number of. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb.

Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should. It dries out relatively quickly and the swelling is usually not enough to affect floor or roof finishes. If your roof has triangles and other shapes you ll need to use a calculator to find the square footage. Don t let the size of osb sheathing deceive you.