How to Fix Swollen Wood Floor | A Quick and Easy Way


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Hardwood flooring adds a touch of elegance and luxury to any room. Solid hardwood floors are highly desirable due to their lustrous sheen and natural color schemes. Although you have control over the flooring you choose, flooding and moisture can occur whether you want them to. Water leaks can have severe repercussions, causing wood floors to swell or buckle due to the humidity. Luckily, there is an easy solution to fix swollen wood floors. Although it is a relatively simple remedy, the entire restoration will most likely take semesters. Let’s learn how to fix swollen wood floor.

Learn More: How To Remove Orange From Wood Floors

Furthermore, you are not the only one if you have fitted sturdy wood flooring, and it is protruding and lifting in the center of your room. Unfortunately, solid wood flooring bulges and raises amid spaces are a widespread issue. The core issue gets frequently found in the initial setup of sturdy wood flooring.

As you know, wood is a natural substance that flexes in response to variations in atmospheric conditions. Solid wood flooring needs an expansion gap for this reason. If concrete wood floors get installed without an inflation gap, issues are likely to emerge, which may be severe. Join us as we demonstrate how to repair a bloated wood floor.

What’s the Cause of my Swelling Wooden Floor?

How to Fix Swollen Wood Floor

Do you have blisters in your bubbled-up oak flooring? The first question that comes to mind is why this occurred. The most typical cause of this issue is excessive moisture in the underlay and boards of your floors. Is it, however, the only one?

Continue reading to learn about the different reasons for ruined boards so you can address the problem and safeguard your whole floor in the future.

Moisture Issue

The presence of water is the principal source of damage. Wood boards are not water-resistant, even if they are waterproof. As a result, moisture may cause the wood floor to expand, particularly when it reaches the laminate core.

Tightening of wooden floorboards

Too much stress between wood flooring planks might cause it to bubble. Temperature variations cause the wood floor to stretch and compress. The wood will wind up popping, peaking, or even bowing if you don’t provide expansion spaces while installing your new parts. Extra-tight veneers might cause bubbling, so paying attention to this is critical throughout the installation.

Expansion Joints aren’t present.

Expansion joints get required between the connecting parts of the boards in large-scale new wood installations. Air bubbles will get trapped behind the panels due to extensive placements.

There isn’t a sound moisture barrier in place.

Ensure you don’t obstruct water evaporation or appropriate home ventilation if you place wood over asphalt and wooden subfloors. Bubbling might occur if your floor does not have a sound moisture barrier.

Spills of Water

Spillages, excess moisture, and pipe failures that don’t get addressed as soon as they occur may result in a bloated hardwood floor.

Wet-mopping and swabbing are two more prevalent issues. These techniques should not get used on a hardwood floor because they may generate moisture indicators such as bowing and popping. It is essential to clean your floors properly.

How to Fix Swollen Wood Floor without Replacing It

Replacing your damaged wood flooring is one option for repair. But don’t panic; if the damage is minor, you won’t need to extract your wall moldings or your entire floor with your wrench. Discover all you need to know about wood floor restoration by following our steps!

How to get rid of Minor Cracks and Bubbles

How to Fix Swollen Wood Floor

All of the techniques listed here are basic DIY projects that any homeowner may do. You’ll be relieved to learn that there are a plethora of internet video lessons available to walk you through every step in depth so you can make it a simple task.

First, use the X-acto knife on the affected joint to alleviate the problem. If the outcome isn’t good, epoxy laminate repair kits may get used to restore the swollen surface.

Second, you may level the surface layer by stretching up the floor. To soften the lift-up location, rent a 100lb rolling pin from your local convenience shop.

Using a compressor or a heater to dry the affected area may stop the bubbles from rising to the surface.

Minor bubbles may be “burst” to remove them. To do so:

  • Lay a moist towel over the bubble.
  • Use a cutter to cut a slit in the region.
  • Apply tacky glue to the incision and push the veneer firmly.

The final step is to flatten it by placing a weight on it undisturbed.

Finally, if your hardwood floor is bulging, you may attempt the popping approach.

How to Replace one Wood Panel at a Time

Although it is not usually feasible to avoid disassembly, you may restrict yourself to replacing just one wood panel at a time without having to disassemble the whole structure. Here’s what you should do:

  • Cut off a tiny rectangle from the interior of your damaged board.
  • To remove the cutout portion, use a chip and a hammer.
  • On the border of your wall, line up panels approximately 10 cm apart.
  • Cut the lock link and detach the remaining portions of the board.
  • Substitute the plank with one that matches the rest of your floor. With a utility knife, cut off the bottom half of the mechanical connection on the jaw side of the plank and the tongue end.
  • Apply a little layer of carpenter’s glue to the bottom of the tongues you’ve cut.
  • Drop the plank into your floor by clicking the groove side of the board.
  • Finally, place a weight on top of it to keep it in place while the glue dries.

Remember that you may need to restore the whole floor if the border expands. Before changing your floor or addressing any other typical wood flooring issues, it’s advisable to get the counsel of a competent wood specialist.

How to Prevent Swelling in your Wood Flooring

How to Fix Swollen Wood Floor

Isn’t it true that prevention is preferable to cure? To avoid your surface from expanding and delaminating, the most significant thing you can do is attempt to keep the following tips and methods in mind:

  • Allow no stagnant water on your wood floor for an extended period.
  • Spillages got your flooring wet? Wipe the moist area as soon as a water spill occurs on the floor.
  • Wet-mopping your wood floors are not a good idea. It’s better to dry clean it if you want it to last.
  • To prevent damage or greasy flooring, use the cleaning chemicals advised by the manufacturer.
  • Use a waterproof coating to keep the floor from sagging when placed on a cement substrate.
  • Keep a relative humidity level of 35-65% in your home. To sustain this relative humidity, utilize a dryer and a compact air conditioner.

Frequently Asked Questions

Can I fix swollen wood floor?

Yes. The above tips on how to fix swollen wood floors will aid you immensely.

What is causing my wood floor to swell?

Wood flooring may buckle by leaking devices or humidity from a concrete subfloor. The wood must tolerate the moisture when it is wet and moistened. As a result, the hardwood boards swell. It would have to increase and expand, causing the wood floor to buckle.

Is it possible to repair bent wood floors?

Yes. The best part is that you may not need to replace your floor when buckling wooden floors. It is often possible to restore a buckled floor with minor damage by simply draining the excess moisture. However, if the hardwood boards are severely buckling, they will need to be replaced.

How do you get swollen wood to shrink?

One famous method for repairing swollen hardwood is to dry it before doing anything else entirely. Somewhat drying utilizing an artificial approach such as a heater or blower, you may evaporate the dampness by letting it rest in full sunshine for at least 24 hours.

What is the best way to repair water-damaged wood?

Water damaged wood can get repaired using these simple steps:

  • Get rid of any rotten wood.
  • Fill up the gaps with auto filler putty.
  • Fill gaps.
  • Sand the surface to make it smooth.
  • Prime and paint the exterior.
  • Keep your wood in good condition.

Does humidity cause a swelling wood floor regularly?

Yes. Whenever there is a high degree of moisture in the air, solid wood flooring absorbs water and then releases it when the humidity in the environment decreases.

The wood swells when the humidity level is high. Humidity that is too low or too low forces the wood to compress again. With hardwood flooring, this deformation is quite typical.

Floors stretch and shrink with the seasons in a specific case, especially in centrally heated houses. When you turn on the central heating in the winter, your hardwood floors lose humidity and contract.

As a consequence, there are often little spaces between the boards. When the warmth gets turned off in the summer, the wood expands again. This gets caused by increasing humidity in the air collected by the floor.

Any gaps formed throughout the winter months will most likely vanish when this occurs. As long as your hardwood floor has gotten adequately installed with the required expanding gap, this gradual phenomenon of elastic deformation is unlikely to cause any damage or deformation. 


Finally, have you seen any lumps or bulging on your lovely wood flooring? First and foremost, do not be alarmed! You can easily and quickly resolve this issue. Furthermore, you will not be required to replace your complete flooring. Are you looking for a way to fix swollen wooden floors without replacing them? Take a look at the advice provided above!

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