Wavy Flooring: How, Why, and What to Do

Engineered floors, often surfaced with hardwoods or bamboo, sometimes demonstrate waviness or warping.  Good quality engineered floors shouldn't do this!  Furniture makers (like your blogger as a hobby) know why this is: wood moves!  And humidity is the primary culprit.

In an attempt to keep gaps from appearing between floorboards during times of low humidity (winter), installers sometimes glue them to the slab or subfloor, or install them too tightly together.  And flooring installed in winter will always expand when humidity rises (summertime months). When they do, the wood will warp if it has nowhere else to go.

No force can stop wood from expanding and contracting with the seasons, so some floors require special installation.  This is not a place to economize!

More info:  How to fix engineered floors that warp | Inman News

-David