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What are the APA recommendations for panel spacing? Why is spacing important?

April 26, 2017APA panel recommendations spacing

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What are the APA recommendations for panel spacing? Why is spacing important?

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APA recommends 1/8-inch spacing at all panel end and edge joints unless otherwise indicated by the manufacturer. Spacing is important because wood expands and contracts in response to moisture content. By spacing panel edges and ends during installation, the risk of panel buckling is minimized. APA’s 1/8-inch spacing recommendations are based on typical 4’ x 8’ panels installed under and for normal conditions. If larger panels are used or if severe moisture conditions are anticipated, increased spacing may be required.