Wood absorbs water through every edge and seam, and it moves as it does. Boards swell, edges rise into cups and, in worse cases, whole sections buckle off the subfloor. Quick, controlled drying can pull some floors back; waiting often decides they cannot be saved.
Cupping, crowning and buckling
The shape of the damage tells the crew what to expect:
- Cupping means the edges are higher than the center, from moisture below.
- Crowning raises the center of each board, often after cupping has been sanded flat.
- Buckling lifts boards off the subfloor and usually means removal.
- Gaps and staining between boards point to long-term moisture.
Drying hardwood in place
Floor panels, also called mats, pull moisture up through the boards while dehumidifiers take it out of the air. Readings on the boards and the subfloor are logged on each visit, and drying stops only when the wood reaches its target. Moisture meters for wood read differently than meters for drywall, so the crew uses the right scale and compares the readings against an unaffected board in the same room. Sanding and refinishing come later, once the floor has settled flat.
When removal is the better call
Floors that buckled, boards soaked with contaminated water and sections that stay high after drying are removed so the subfloor can be dried directly. Replacing a damaged section is often better than fighting a floor that keeps moving. A leaking appliance or pipe under the floor is a separate repair; see appliance leak water damage and slab leak water damage.