Can a wet hardwood floor be saved?
Sometimes. Solid hardwood that took on clean water and has not swelled beyond repair can often be dried back to its shape over a period. The crew checks the boards, the subfloor and the edges before deciding, and it notes any boards that will need replacement.
Solid wood responds to moisture by swelling across the grain, which is what makes boards cup, rise at the edges or lift at their seams. Once the moisture leaves the wood, the boards can return to flat if the swelling was not too severe and the drying was even. A board that has swelled and split will not return to its shape.
The drying method matters. Airflow across the surface and controlled drying from the underside help the wood release moisture evenly. Fast or uneven drying can leave a floor cupped or crowned. The crew dries the floor slowly and checks the boards over several visits, and it tells the homeowner which boards are unlikely to recover.
Why is carpet pad usually removed?
Pad is porous and holds water like a sponge. Once it has taken on water, it is hard to dry all the way through, and it can keep the subfloor wet for a long time. The pad is removed and replaced, and the carpet is kept only if its backing has held up.
Carpet pad is made to cushion, not to hold water. Its fibers and foam hold moisture against the subfloor, and a pad that has soaked can keep the floor damp for days after the carpet looks dry. Removing it lets the subfloor dry from above.
The carpet is another matter. Carpet can often be cleaned and dried if the water was clean and the backing has not separated from the face. If the carpet has been in sewage or has sat in water for a long time, it usually comes out with the pad. The technician records the decision and gives the reasons.
How is the subfloor checked under a floor?
The subfloor is read with a moisture meter at several points and across its surface, and the readings are compared with a dry reference in the same building. Where the subfloor is still wet, the crew opens a section or dries from underneath to reach it.
A subfloor is usually plywood or particleboard, and each of those materials holds moisture differently. Plywood can recover more readily than particleboard, which can lose its strength when it is wet. The technician takes readings to see what the material has done, and records any swelling or softness.
Reading the subfloor is the step that decides when the floor is ready. A floor that is closed over a wet subfloor will cup, stain or grow mold once the moisture has nowhere to go. The crew checks the subfloor before any new covering is laid and writes the readings on the record.
What affects the cost of drying a floor?
The cost depends on the floor type, the area affected, whether the floor can be kept and the subfloor condition. No figure is given here. The technician explains the choices on site, and the price is approved before any work starts.
The floor type is the biggest factor. Carpet and pad over a large area are simpler to remove and dry than solid hardwood, which needs slow drying and sometimes board-by-board checks. Laminate and engineered floors often need replacement once they have swelled, which changes the scope and the materials.
The subfloor and the rooms around the wet area matter too. A subfloor that dries in place is less work than one that has to be opened and replaced. Transition strips, baseboards and cabinets at the edges of the room can need to come off so the floor can be reached, and the technician notes those items on the first visit.
When can a new floor be laid over the drying area?
Once the subfloor and the joists have held dry readings over several checks. A new floor laid over a damp subfloor can cup, stain or lift, so the crew does not sign off the area until the readings confirm it is dry. The record goes to the flooring contractor.
The floor contractor should see the readings before the new covering goes down. A dry subfloor is the basis for a durable floor, and a damp one can ruin the new covering in a short time. The record shows the readings, the materials removed and the areas still being checked.
The homeowner can ask the flooring contractor to check the subfloor's moisture before the new floor is laid. A good contractor will do that as a routine step. The cleanup crew does not lay floors, but it provides the readings and the notes the contractor needs.