Floating floors are not attached to the subfloor and rely on an expansion gap at the perimeter to accommodate movement. If indoor humidity levels drop too low, wood-based components lose moisture and shrink, which can pull locking joints apart. Conversely, excessive humidity can cause planks to expand, potentially causing buckling. Maintaining stable environmental conditions, typically between 35% and 55% relative humidity, is essential for minimizing seasonal gapping. If gaps are minor and seasonal, they often close as humidity returns to normal levels during the year.
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Does humidity cause gaps in floating floor planks?
Yes, significant fluctuations in indoor humidity can cause floating floor planks to expand or contract, resulting in visible gaps at joints. Wood and laminate are hygroscopic materials that absorb or release moisture, directly impacting their physical dimensions based on the environment.