New London and Groton hardwood floor drying

Old wide boards respond well to patient drying but split if dried too hard ^[1].

Dry the crawl space too, or the floor stays damp from below.

Surge water is contaminated, so soaked floors and subfloors are usually removed ^[3].

Floors over crawl spaces near the water may already be damp before a leak, because humid air and high groundwater keep the space moist. After a leak, the floor will not dry properly until the crawl space does. The crew dries the boards from above with mats and dehumidifiers and works below with dehumidifiers placed inside the crawl space, removing wet insulation first. Adding a vapor barrier afterward helps the floor stay stable through the seasons.

Cupping that returns every summer is often a crawl space problem rather than a leak.

Boards may keep relaxing for weeks after readings reach normal. Photograph the floor weekly and decide on sanding only when it stops changing.

Say whether it is wide plank, strip, engineered or laminate, what is underneath, how long it was wet and whether the water was clean.

Wide pine and oak boards in historic New London, Groton and Mystic houses are often face-nailed, sometimes with gaps between boards that have opened over two centuries. They move more with humidity than narrow strip floors. After a leak, they are dried gently with mats and dehumidifiers at moderate temperatures, because aggressive heat can split them. Stains may remain where water sat long; some fade with light sanding, others become part of the floor's character. Owners usually prefer careful drying and a sympathetic refinish over replacement.

If boards must be replaced, salvaged boards from a closet or attic often match best.

Floors swell in humid summers and shrink in dry heated winters. The contractor sets the drying goal from unaffected boards in your own house, and small winter gaps afterward are usually seasonal.

Pull area rugs and rubber-backed pads off wet hardwood right away. They trap water against the boards.

Flexible mats are taped to the floor and connected to a vacuum unit that draws moisture up through the joints between boards, while dehumidifiers in the room capture it. On wide-plank and strip floors with small gaps, mats can pull a lot of water from the joints and subfloor. On tight engineered floors they are less effective, and lifting planks may be the better option. The crew seals mat edges carefully so the vacuum draws through the floor rather than around it.

Mats usually run for several days.

Older floors may carry shellac, varnish or wax. Moisture under them can turn the finish cloudy white; the haze often clears as the floor dries. In houses built before 1978, sanding old finishes should follow lead-safe practices.

Water from an upstairs bathroom often runs down the stairs. Treads and risers are thick and dry slowly; the crew may dry the stringers from below. Pull up any runner.

Photograph the floor on day one and after it settles, and keep the drying readings for the claim.

Put leak sensors near the dishwasher, refrigerator and any bathroom over wood floors, replace old supply lines with braided ones and keep indoor humidity steady through the year. In shore houses, drying the crawl space and adding a vapor barrier protects floors from the slow seasonal dampness that causes cupping every summer. For seasonal homes, a leak sensor that texts your phone and a low-temperature alarm protect floors while nobody is there.

Close crawl space vents for winter so pipes under the floor do not freeze.

The owner decides on drying and repair. Keep furniture and rugs off the wet area, leave equipment running and report new cupping or soft spots.

Wait until the floor has settled, use felt pads and lift pieces rather than dragging them.

The subfloor holds water long after the finish boards feel dry and keeps them wet from below. Restorers check it from the basement or crawl space below, or through small holes in an inconspicuous spot, and keep drying until it reaches its own dry goal. Boards will not flatten while the subfloor under them is still wet, and over crawl spaces that means drying the crawl space too. Plank subfloors in older houses have gaps that let water through to the space below, which spreads damage but also gives drying air a path.

Oak strip is easy to match; wide pine may need salvaged boards. Refinishing the room blends the repair.

A burst pipe puts clean water into a floor that can often be dried. Surge water from the Sound is contaminated, so soaked floors and subfloors are usually removed. Tell the contractor the source first, because it decides the whole plan for the floor and the subfloor beneath it.

Water soaks into the underside and edges of boards first, so the bottom swells more than the top and the edges rise. Drying the boards and subfloor evenly lets them relax. Drying mats taped to the surface pull moisture up through the joints while dehumidifiers capture it, and drying the crawl space or basement below balances the boards. Sanding a cupped floor before it has dried and settled leaves it crowned later. Many floors keep flattening for weeks after the equipment leaves.

This applies to clean-water leaks; floors soaked by surge water are a different decision.

Slow dishwasher and refrigerator leaks under cabinets are a common cause of cupping. Pull the appliance, remove the toe kick and let air reach the floor beneath.

Newer and renovated homes may have engineered wood or laminate. Engineered floors can sometimes be dried; laminate usually swells at the seams and is replaced.