Hardwood Floor Water Damage in San Antonio

Wood is thirsty. A solid oak board pulls water in through its bottom face and its edges, swells, and has nowhere to go because its neighbors are swelling too. What happens next has names, and you'll hear them a lot once your floor gets wet:

• Cupping. The edges of each board rise above the center, so the floor looks rippled, like a washboard. It usually means more moisture underneath the boards than on top.
• Crowning is the reverse: the middle of the board sits higher than the edges. It often shows up when someone sands a cupped floor flat before the wood has dried, and then the boards shrink back.
• Buckling is the bad one. The boards push so hard against each other that they lift right off the subfloor.

Engineered hardwood has its own failure: the thin wood layer on top can separate from the core once water gets into it. And a lot of hardwood in San Antonio homes sits on a concrete slab, where water trapped under the boards can't drain away and dries slowly.

Speed is the whole game with wood floors. The longer water sits, the deeper it goes into the boards and the subfloor, and the less likely the floor flattens out again on its own. The EPA says to dry water-damaged areas and items within 24 to 48 hours to prevent mold growth, and the Texas Department of Insurance warns that mold can start growing within a day after a leak.

A few things you can do while you wait for us:

• Stop the water first. Close the valve at the fixture or shut off the main.
• Mop or towel up what's standing on top. Every bit you get off the surface is water that won't soak in.
• Pull wet rugs off the wood, since a soaked rug holds water right against the finish.
• Don't crank up a space heater to "bake" the floor. Drying one side of a board fast while the bottom stays wet is a good way to make the cupping worse.

We're available 24/7, and the crew comes ready to start work on the first visit, not to look around and schedule a return trip.

Drying hardwood is slower and fussier than drying carpet or tile. We work in this order:

1. Extraction. Water extraction pulls water off the surface and out of the gaps between boards.
2. Mapping the wet area. Moisture readings in the wood, along the baseboards and in the drywall show how far the water traveled. Water under a floor almost always goes farther than the puddle did.
3. A dry baseline. We take readings on a part of the same floor the water never touched. That number becomes the target.
4. Drying the floor and what's under it. Structural drying works on the boards, the subfloor and the wall bottoms together, because a dry surface over a wet subfloor won't stay flat.
5. Monitoring until the readings match. The floor is dry when the wet area reads like the dry baseline, not when it looks fine.

We won't promise to save a floor before we've measured it. Nobody honest can. That said, it tends to break down like this.

Often worth saving: solid hardwood that got wet from clean water, was caught quickly and only cupped mildly. A lot of that cupping relaxes as the wood dries. It may still need sanding and refinishing afterward, but the boards stay.

Usually coming out: boards that buckled off the subfloor, engineered planks with a separated top layer, wood that sat in water for days, and anything that stayed wet long enough to grow mold. Water from a dirty source changes the math too. Wood soaked by Category 2 water, like a washing machine overflow, gets a harder look, and our washing machine leak page explains that category.

One opinion we hold firmly: don't let anyone sand a cupped floor until it's dry. Sand it wet, and you can end up with a crowned floor once the wood shrinks back.

Once the floor is dry, what's left is repair work, and we do that too. We rebuild the projects we restore. That can mean sanding and refinishing boards that flattened out, weaving in replacement boards where a section had to come up, or replacing the floor in a room where the damage went too far. It all falls under reconstruction, and the specifics of rebuilding after a leak are on our water damage repair page.

A heads-up about matching: older floors have aged and been refinished, so new boards rarely blend in perfectly on day one. Sometimes refinishing the whole room is what makes a patch disappear. We'll talk through that before anything gets ordered.

On the insurance side, we help document the damage and work with your insurance carrier throughout the restoration process. Your carrier decides what your policy covers and pays for, including whether it covers replacing the floor, and your deductible applies. We don't interpret policies. See our insurance claims page for how that works. We do this work for homes in San Antonio, Boerne and Austin.