Hardwood and tile floor drying

Why floors are tricky

A floor is a layered system. On a concrete slab there may be a vapor barrier, an underlayment, an adhesive, and then the finish floor. Over a wood subfloor there is plywood or boards and possibly joists below. Water does not stay on top. It goes through seams, edges and cracks and settles between layers, where air cannot reach it and ordinary fans do nothing.

That is why wet floors that look fine often fail later. Solid and engineered hardwood absorb water and swell, cup, crown or buckle. Laminate swells at the edges and delaminates. Tile can loosen from the substrate, grout can crack, and a trapped layer of moisture beneath tile keeps the area humid and can support mold. Vinyl planks can lift and trap water beneath them.

What floor drying means

Floor drying is a set of methods designed to pull moisture out of the layers beneath a floor surface without removing it. The best known is a mat system.

Drying mats and panels. Mats with small channels or vents are laid on the floor and sealed with a membrane. A vacuum pump or a blower draws air across the floor, pulling moisture up through the finish and out into the air. On a hardwood floor, this can bring the moisture content of the boards down evenly. Some systems use heat, and some use vacuum to speed vapor movement.

Injectidry-type systems for cavities. Small holes can be drilled at the edge of a floor or in toe-kicks to push dry air under cabinetry and into layers below.

Subfloor drying. Where flooring is removed, the plywood or boards underneath can be dried directly with airflow and dehumidification.

All of these work together with dehumidifiers. The mats draw moisture into the air, and the dehumidifiers remove it. See structural drying.

Which floors can be saved

It depends on the material, how long it was wet and what kind of water it was.

• Solid hardwood. Often can be saved if the water is clean and drying starts within a day or so. Some cupping may remain and settle as the floor dries. It may need sanding and refinishing.
• Engineered hardwood. More sensitive. Water gets into the layers and can cause delamination. Sometimes saved if the water was limited.
• Laminate. Usually not saved if it swelled, since the core is fiberboard and does not recover.
• Tile on concrete. Often can stay. We dry the slab and the area beneath, and check that the tile is still bonded and the grout is sound. A tile floor over a wet slab may need to stay under observation.
• Tile on a wood subfloor. The subfloor may be at risk. We take readings.
• Vinyl and luxury vinyl plank. Water can get under it and be trapped. Individual planks may be lifted and replaced, or the floor removed if wet beneath.
• Carpet. Can often be dried if the water is clean and it is caught early. The pad is usually replaced.

We will not promise a floor can be saved before we look. We take readings, test the response and tell you where things stand. If a floor cannot be saved, we say so before spending days trying.

Time frames in floor drying

Floor drying typically takes several days to a week or more. Hardwood is deliberately dried gradually to avoid cracking, and a concrete slab can take longer. Rushed drying can split boards, so the schedule matters.

What to do before we arrive in floor drying

• Remove standing water if you safely can, using towels or a wet vacuum.
• Remove rugs, mats and furniture from the wet area. Put foil or blocks under furniture legs that cannot be moved.
• Do not use heat guns or irons to dry a wood floor. It can damage the finish and cause the boards to crack.
• Do not seal or cover a wet floor.
• Photograph the floor from several angles before anything changes.

When replacement is the better option in floor drying

If the floor has been wet for an extended period, if the water was contaminated, if the materials are heavily swollen or delaminated, or if the cost and time of drying exceeds the value of the floor, replacement makes sense. We would rather tell you honestly and help you document the loss than run equipment for a week on a floor that was lost on day one.

What affects the cost of floor drying

Floor drying is priced by the area, the equipment needed, and the days. Specialty mat systems are more expensive than basic air movers, and hardwood takes longer than carpet. Refinishing and replacing are separate. See pricing.

Questions about floor drying

Will my hardwood cup?

It may cup when wet and flatten as it dries. We monitor and tell you if it does not.

Can you dry under cabinets?

Yes, through toe kicks or small access holes.

Is the slab OK under tile?

We take readings and tell you.