“Wood flooring will expand and contract as it gains and loses moisture with changes in relative humidity. Gaps between boards during low humidity periods (like winter) are normal and not considered a defect.”
— NWFA: Moisture-Related Issues

“Wood flooring will expand and contract as it gains and loses moisture with changes in relative humidity. Gaps between boards during low humidity periods (like winter) are normal and not considered a defect.”
— NWFA: Moisture-Related Issues
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