How to Replace Damaged Hardwood Floor Planks Without Removing the Entire Floor

Identify the Problem

The process of learning how to repair hardwood floors begins with a diagnosis of what is going on. Without identifying the issue behind the wonky floorboard, the problem could keep coming back, even after the fix.

Some common problems with hardwood flooring include bowing and buckling, scratches, fading, and warping. Cosmetic issues caused by furniture or traffic gouges or scratches are clear candidates for replacement.

Warping and bowing, on the other hand, could be a sign of underlying issues like loose floor joists, a damaged subfloor, or even foundation issues. In these cases, it is best to contact a professional to take a look at the bigger picture.

Get to Know Your Floor Boards

If you are ready to take on the task of replacing hardwood floor boards, the most important step is properly measuring and identifying the ones in need of removal. The majority of boards, both old and new, have some sort of interlocking system—either a tongue-and-groove or a click-wood floor. Depending on its age, the floor may be held down using glue, fasteners, or nails.

When in doubt about the exact measurements or type of flooring, we recommend calling in a pro to help with this step of the process.

Floor Board Features

To choose the right replacement board for your floor, you will need to know:

• The type of wood or laminate

• The interlocking system used in other boards

• The color or finish of your current boards

• The depth of the board

• What lies beneath the board (concrete, subflooring, etc.)

Cover Your Space

Photo: Tom Merton / Caia Image / Adobe Stock

Before turning on any power tools, cover the rest of your floor with a protective layer of painter's plastic or paper. Dust will be an issue when sawing into the wood, so be sure to have proper ventilation or a ventilation feature on the saw itself.

Prepare Your Saw and Cutting Area

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Get your tape and mark the outside edges of the boards you are replacing.

Next, you need to set the depth of your circular saw. If you do not know the depth of the hardwood flooring, you may need to remove a transition strip to find out. Old flooring is usually ½ inch to one inch thick, but you won’t know for sure until you make a measurement.

Set your circular saw depth to the thickness of your board to avoid accidentally cutting into the underlayment or subfloor.

Make the First Cuts to Remove the Old Floor Board

Now it is time to start making the first cuts into the first board you want to remove. To do this, make a cut ½ inch inside the length of the board. Do the same for the other side of the board. Then, make a perpendicular cut to join the two cut lines. In the end, your cuts will look like an “H”. Put your circular saw away, and use your oscillating multi-tool to go over the same cuts one more time.

Remove the Old Board With a Flat or Pry Bar

To remove the old board, start by inserting a flathead screwdriver into the center cut. Hit the screwdriver with a rubber mallet until the opening is large enough to fit a pry bar. Next, wiggle the pry bar and remove all the pieces of the old board.

Once you are done with this step, use a vacuum to clean up any loose debris and dirt. Tape up your underlayment if you accidentally made cuts into it.

Prepare the New Floor Board

Before you install new hardwood flooring, allow it to acclimate to your home for at least 48 hours before installing.

To prepare the new floor board, take exact measurements of the hole in the floor. Then cut the length of the board on the groove side and trim the tongue side at a seven-degree angle. Cut the new board to the exact length with a miter saw.

Dry-Fit the New Board

Tap the fresh board into the empty space with your rubber mallet before adding glue or nails. If it is not the right fit, now is the time to adjust the edges by sanding or reshaping.

Glue and Secure

Remove the board and add one line of glue along each edge and through the center in a crisscross pattern. Place the new board into the slot and secure it lightly with the wooden mallet. If your board includes nails, add these now with a nail gun. You can cover these spots with wood putty later on to match the finish.

Let It Dry

Avoid walking on your new boards for at least 12 to 20 hours after gluing to ensure they do not shift. Once the glue dries and nail holes are nicely covered, your like-new flooring will be good to go.