Osb Vs Plywood Roof Sheathing

Osb is now used for about 70 percent of all floor wall and roof sheathing in north america.

Osb vs plywood roof sheathing.

2x greater shear strength than similar sized plywood source. It is true as the price of every osb board is around 15 20 per sheet 4 8 sizes. Today you can find osb in thickness from 7 16 to 1 1 8 for different applications from roof wall subfloor i joists and everything between. University of massachusetts meets most building codes for roof and wall sheathing.

Osb boasts a more consistent density. Building codes the engineered wood association architects and most builders rate plywood and oriented strand board obs sheathing equal in strength and durability. In fact recent price quotes from denver boston and atlanta put 7 16 inch osb 3 00 to as much as 5 00 per sheet lower than 1 2 inch cdx plywood. Osb is much more waterproof than plywood and cdx plywood.

That is why osb is sometimes used to secure houses when a hurricane draws near. Osb is cheaper than plywood by about 3 to 5 per panel. Osb has earned its reputation as a low cost substitute for plywood. Home osb is about 700 less expensive compared with plywood if used as the subfloor sheathing and roof decking.

In 2001 oriented strand board surpassed plywood in terms of square footage produced. For a typical 2 400 sq. Both types of panels contain phenol formaldehyde in the adhesive osb also contains isocyanurate resin but neither contains the urea formaldehyde which is quite toxic to humans. Installing either sheathing over a 500 square foot area would cost roughly 160in material for plywood and 100for osb.

The glue and resin that is mixed in with the wood chips makes it much less permeable so osb holds up longer in harsher conditions. Both cost about the same to install 70an hour for a carpenter. A 4x8 foot sheet of construction grade plywood costs roughly 10a sheet while the same size sheet of osb costs only 6a sheet. Home at current prices would cost about 700 more with plywood than osb.

Osb panels can be manufactured in lengths up to 16 feet or sometimes even higher while plywood is generally limited to 8 to 10 feet. Talking about plywood or osb for roofing you cannot miss the information of the cost.