How do you fix water under hardwood floors?

Author: Prof. Mohammad Witting Sr.  |  Last update: Monday, April 13, 2026

FAQs: Moisture Under Hardwood Floors Your first step to getting rid of moisture under your floor should be to identify the source of the water and stop any future moisture from affecting your floors. Mop up any standing or visible water, and then use dehumidifiers and fans to help dry out the floors.

What to do if water gets under a wood floor?

Drying water under a wood floor requires proper ventilation and dehumidification. Use fans and dehumidifiers to circulate air and remove moisture from the affected area. Additionally, you may need to lift and aerate the floorboards to facilitate drying thoroughly.

What pulls moisture out of wood floors?

Use a dehumidifier placed at the highest setting possible to dry the floors. Place it in the center of the room and leave it on for at least 24 hours. Next, place fans around the room so the entire surface receives the blowing air. Place the fans at the highest settings possible.

How do you fix water damaged wood without replacing it?

To treat water-damaged wood, first ensure the wood is thoroughly dried using fans or a dehumidifier. Sand away any raised fibers or stains caused by the water, then apply a wood stain or sealant to protect the wood from future moisture. In some cases, you may need to replace severely damaged sections.

Can wet hardwood floors be saved?

Sometimes wooden subfloors can be dried out and returned to their previous condition, but in severe floods or cases with extensive water damage they will likely need to be replaced as well.

Water Under Floor Boards

How to dry out water under flooring?

Use fans, dehumidifiers, or even a wet-dry vacuum to dry water under laminate flooring and the subfloor. Ensure proper ventilation to accelerate the drying process. You can also use towels to absorb excess moisture.

How do you flatten a swollen hardwood floor?

Here are the steps you can follow to fix a water-damaged, swollen wood floor:
  1. Step 1: Identify the source of water. ...
  2. Step 2: Remove standing water. ...
  3. Step 3: Dry the area and Assess. ...
  4. Step 4: Sand the swollen areas. ...
  5. Step 5: Apply wood conditioner. ...
  6. Step 6: Apply wood glue or epoxy. ...
  7. Step 7: Sand and refinish.

Can you fix waterlogged wood?

Wood can recover from water damage to some extent. Immediate action, like drying the wood thoroughly, addressing moisture sources, and applying appropriate treatments, can mitigate damage.

Can you fix water damaged hardwood?

In some instances, a straightforward refinishing of the hardwood floors may suffice. Other scenarios may require patching to replace the damaged hardwood boards before refinishing. In the most severe cases, the removal and replacement of the entire hardwood floor may be necessary.

What is the best product to repair rotted wood?

If you catch rotted wood in time, you can successfully repair it with epoxy resin. Repairing rotted wood means you'll be able to stain or paint it again to blend in with the surrounding wood.

What draws moisture out of wood?

After thoroughly towel drying the floor, add absorbent material like sawdust, baking soda, or kitty litter. Spread a generous amount of the material over the affected area and let it sit overnight. The absorbent material helps to draw out any remaining moisture from the wood and makes it easier to dry.

How long does it take for water to damage wood floors?

As time passes, the moisture trapped within the wood creates an ideal environment for mold and mildew growth. Within 24 to 48 hours, mold spores can begin to colonize, posing health risks to residents and further compromising the structural integrity of the flooring.

How do you rehydrate hardwood floors?

Here's how:
  1. First, give your floor a good cleaning. ...
  2. Next, apply the revitalizer according to the package instructions. ...
  3. Use your mop to spread the revitalizer on the floor. ...
  4. Once the revitalizer is spread evenly, let it dry fully before you move furniture back in place or allow foot traffic on the floors.

What to do if there is water leak under the floor?

Stop or Identify the Water Source

This may need to be done professionally, but you can try and locate the water source yourself. Most of the time if you listen closely, you'll hear water running. If you can't find the source, contact a local professional to examine your flooring.

How do you fix a water damaged wood subfloor?

How to Fix a Water-Damaged Subfloor: Your 8-Step DIY Guide
  1. Start by Stopping the Water. ...
  2. Expose the Subflooring. ...
  3. Make Your Mark. ...
  4. Carefully Cut Subflooring. ...
  5. Remove Damaged Materials. ...
  6. Speed Up the Drying Process. ...
  7. Reinforce Floor Joists. ...
  8. Install Your New Subflooring.

How do you fix water under wood floors?

How to Fix Water Damaged Swollen Wood Floor. If the floor is swollen because of humidity, then you need to install ventilation fans to dry out your room. You can set up a dehumidifier in the room to help dry out the flooring, capture the moisture, and speed up the process.

Will insurance pay for water damage to a wood floor?

Homeowners insurance generally covers water damage that's sudden and accidental. For example, if a pipe bursts or a washing machine overflows and damages your floor, you may be covered. But if the water comes from flooding, standard homeowners insurance typically won't cover it.

Is water damage on wood permanent?

Water damage to wood can be permanent if left untreated.

How to fix water damaged wood without replacing it?

Sanding to smooth uneven areas. Applying a stain for colour restoration or change. Sealing with a protective finish like polyurethane or varnish. Applying a wood preservative for wood that is water damaged but structurally necessary to maintain.

How do you dry waterlogged wood?

Dry the Affected Areas

To further speed up the drying process, set up an electric heater. The heat will help evaporate the moisture faster. If the water-damaged wood is in an enclosed space, consider using a dehumidifier.

How to fix water damage on baseboards?

Use Sandpaper for Minor Water Damage

If the water damage is minor, you can use sandpaper or a chisel to remove the affected portion, such as peeling paint or brown stains. Then, paint over the baseboard and apply a waterproof seal on top.

Will a wet wood floor go back to normal?

Will Wet Wood Floor Go Back to Normal? No, in most cases, water-damaged wood flooring will not just “go back to normal”. As a professional water damage mitigation company, we regularly deal with multi-thousand-dollar water damage repair projects.

What do you do if you get water under floorboards?

Key Takeaways. If you have water under your floorboards, remove floor coverings and dispose of damaged paper products, dry the area, clean and disinfect the soaked floorboards, ventilate the room, and contact a professional like ServiceMaster of Lake Shore for complete restoration services.

What do water damaged hardwood floors look like?

If you notice black, gray, green, or other discolored spots on or between the planks of your hardwood floor, this could be mold, meaning prolonged water damage.

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