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OSB vs Plywood

Posted by Mark Beadnell on March 27th, 2003 08:11 PM
In reply to OSB.......and water......... by doug seibert on March 22nd, 2003 08:42 AM [Go to top of thread]

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OSB and Plywood carry virtually the same span ratings (size for size) and are cross compatible for all building codes i'm aware of. Both OSB and Plywood will swell with when wet. An Exposure 1 rated panel (which typical CDX/plywood and OSB is) is made to stand up to "typical construction delays". You should keep both CDX and OSB off the dirt and mud and keep standing water off of both. OSB swells faster than plywood but it swells more evenly throughout the panel, and it dries faster than plywood. Plywood tends to swell more at the edges. They are made with the same adhesives and resins. There is more chance for plywood to delaminate than for OSB to "fall apart". Check out the site listed below for another "educated" view.~Mark

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