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Performance Panels.com, APA - The Engineered Wood Association, The Leading Resource for Information About Engineered Wood Products

Dimensional Stability and Flatness

It is a well-known fact that when wood loses or gains water, it shrinks and swells. The moisture content of structural panels is generally 2 to 8 percent when manufactured. When acclimated to ambient conditions or when exposed to elevated humidity or wetting after manufacture, the resultant increase in moisture content can lead to dimensional increase in thickness, length and width, but APA testing shows plywood and OSB exhibit greater dimensional stability than other wood-based building products.

Keep reading about the dimensional stability and flatness of wood structural panels.

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