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What is OSB?

OSB
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What is OSB?

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Oriented Strand Board is an exterior (phenolic bonded) engineered wood product made by layering strands of resin saturated wood on a mat with a specific orientation that approaches veneer core in stiffness. It is frequently used in the construction of new residential homes as a wall and roof sheathing and as underlayment in certain cases. OSB is a NAUF product by LEED® definition. Columbia does not currently manufacture OSB and it is seldom used as a core in hardwood plywood panels.

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