A floor many owners do not know they have

Narrow oak strip flooring was a standard finish in living rooms, hallways and bedrooms of many houses built in the 1950s and 1960s. Later owners often covered it with carpet. A water loss is sometimes the first time anyone has seen the wood in decades.

When carpet and pad get wet over hardwood, the pad acts like a sponge pressed against the wood, holding water on the surface. The wood absorbs moisture from the top and, if water got below, from the subfloor too. Uneven moisture makes the boards swell unevenly: edges rise higher than centers, which is called cupping. The reverse, centers higher than edges, is crowning, which often shows up when a cupped floor is sanded flat too soon.

Carpet and pad versus the wood below

Carpet and pad

  • Pad is almost always removed once soaked; it holds water and is inexpensive to replace
  • Carpet can sometimes be dried with clean water and quick action, but it is often removed over wood to let the floor dry
  • Tack strip around the edges is usually replaced
  • Any contaminated water means both carpet and pad go

Oak strip floor

  • Solid hardwood can often be dried in place with the right setup
  • Cupping frequently flattens partly or fully as moisture evens out
  • Boards that split, buckle off the subfloor or stay cupped may need replacement
  • Sanding and refinishing should wait until readings match unaffected wood

A realistic sequence for drying a hardwood floor

Timing depends on how wet the wood got, the subfloor beneath it and the drying setup.

Day of the leak
Water source stopped, carpet and pad pulled back or removed, surface water extracted, wood readings taken against a dry room.
First few days
Dehumidifiers and air movers run; specialized mats may be used to draw moisture from the boards. Cupping may look worse before it improves.
First week or two
Daily readings should trend down. The crawlspace or basement below may need drying at the same time.
When readings normalize
Boards are evaluated again. Many flatten on their own; others are noted for replacement.
After a settling period
Sanding and refinishing, once moisture content has stayed stable. Rushing this step causes crowning.

Questions to ask about a wet hardwood floor

  1. What were the readings on the wet boards compared with dry oak elsewhere in the house?
  2. Is the subfloor or the space below wet as well?
  3. Will you use floor drying mats or only room drying, and why?
  4. At what reading will you call the floor dry?
  5. Who decides which boards need replacement, and when?

General information for Lakewood, not a quote or professional advice. In an emergency, call 911.