How to Repair Laminate Flooring: Fix Scratches, Chips, Water Damage & More

How to repair laminate flooring is one of the most searched flooring questions — and for good reason. Laminate is durable and affordable, but it is not indestructible. Scratches from pet claws, chips from dropped objects, water damage around sinks, and seasonal gaps are all common issues that homeowners encounter. The good news is that most laminate flooring problems can be fixed without replacing the entire floor.

This guide walks you through every common laminate repair scenario, the tools and materials you need, step-by-step techniques, and clear guidance on when a repair makes sense versus when full replacement is the smarter choice.

Fixing Scratches in Laminate Flooring

Scratches are the most frequent type of laminate floor damage. Because laminate has a photographic wear layer rather than solid wood, you cannot sand out scratches like you would on hardwood flooring. Instead, you need to fill or disguise them.

Minor Surface Scratches

Light scratches that only affect the clear wear layer are the easiest to address. A wax pencil or crayon-style filler matched to your floor color is all you need. Clean the scratch with a damp cloth, let it dry, then draw the wax pencil along the scratch while pressing firmly. Buff the area with a soft cloth to blend the wax into the surrounding surface. The repair is not invisible, but it prevents the scratch from catching light and becoming more noticeable.

Medium Scratches

For scratches that penetrate the decorative layer and expose the fiberboard core, use a laminate repair kit. These kits include colored putty or paste that you apply with a plastic putty knife. Choose a kit that matches your floor’s color family — most manufacturers sell brand-specific repair kits. Apply the filler, scrape off the excess with the putty knife held at a 45-degree angle, and allow 24 hours to cure before walking on the area.

Deep Scratches

Deep gouges that reach the fiberboard core require a two-step approach. First, fill the gouge with laminate repair putty and let it dry. Then apply a matching touch-up marker or paint pen over the dried filler to blend the color. Finish with a thin coat of clear polyurethane sealer to protect the repair and add a slight sheen that matches the surrounding laminate.

Repairing Chips and Dents in Laminate

Chips typically happen when heavy objects are dropped on the floor, breaking away pieces of the decorative layer. Unlike scratches that follow a line, chips expose an irregular area of the brown or tan fiberboard beneath.

Step 1: Clean the chipped area thoroughly and remove any loose material.

Step 2: Apply laminate floor filler (available in squeeze tubes) into the chip. Build up the filler slightly above the surface level because it will shrink as it dries.

Step 3: Once dry (typically 8 to 12 hours), sand the filler flush with 220-grit sandpaper using very light pressure — you do not want to scratch the surrounding laminate.

Step 4: Apply matching paint using a fine artist’s brush to recreate the wood-grain pattern. This step is optional but makes the repair far less noticeable. Allow the paint to dry, then seal with a small amount of clear finish.

For large chips or dents that cover more than a square inch, consider replacing the individual plank instead. The repair will be more visible and less durable on a large area.

Water Damage Repair: Replacing Damaged Planks

Water is the biggest enemy of laminate flooring. When moisture penetrates the fiberboard core, the plank swells, warps, and eventually crumbles. Unlike surface scratches, water damage cannot be patched — the affected planks must be replaced.

How to Replace Water-Damaged Laminate Planks

Method 1: Disassemble from the nearest wall. If the damaged planks are close to a wall, remove the baseboard, then unclick and remove planks row by row until you reach the damaged ones. Replace the bad planks with new ones (keep leftover planks from installation for exactly this purpose), then reassemble everything back to the wall.

Method 2: Cut out the damaged plank. For planks in the middle of the room, use a circular saw set to the exact thickness of the laminate to cut the damaged plank. Make a rectangular cut inside the plank, leaving about 1 inch from each edge, then use a chisel to pry out the center piece and carefully remove the edges. Cut the tongue off the bottom of the replacement plank’s groove side, apply wood glue to the edges, drop the new plank into place, and weight it down for 12 hours.

Preventing Future Water Damage

After replacing damaged planks, address the moisture source. Common culprits include leaking dishwashers, overflowing sinks, pet water bowls, and planter pots without saucers. Consider applying waterproof laminate sealant along seams in moisture-prone areas, and always wipe up spills within minutes rather than hours.

Closing Gaps Between Laminate Planks

Gaps between laminate planks are usually caused by two factors: seasonal humidity changes and planks that have shifted over time. Laminate is a floating floor, meaning it sits on top of the subfloor without fasteners, so planks can move.

Tapping Planks Back Together

For small gaps, you can often tap the planks back into position. Place a tapping block (a scrap piece of laminate works well) against the edge of the shifted plank and tap it with a rubber mallet toward the gap. Work along the entire length of the plank, applying even pressure so it moves straight without angling.

Humidity Control

If gaps appear in winter and close in summer, low humidity is the cause. Laminate contracts in dry air. Running a humidifier to maintain indoor humidity between 35% and 55% will keep gaps from forming. This is the most effective long-term solution because it addresses the root cause rather than the symptom.

Suction Cup Method

A large suction cup (the kind used for moving glass) can grip the surface of a laminate plank and let you pull it toward the gap. This technique works well when the gap is too far from a wall to disassemble rows.

Fixing Peaking and Tenting

Peaking (also called tenting) occurs when laminate planks push upward at the seams, creating a raised ridge. This is almost always caused by insufficient expansion gaps around the perimeter of the room.

Laminate flooring needs a minimum 1/4-inch expansion gap along every wall, around every door frame, and around fixed objects like kitchen islands and pipes. Without this gap, the floor has nowhere to expand when humidity rises, and the pressure forces planks upward at the joints.

How to Fix Peaking

Step 1: Remove the baseboard trim along the wall closest to the peaking.

Step 2: Check the expansion gap. If planks are touching the wall, use an oscillating multi-tool or circular saw to trim 1/4 to 1/2 inch of laminate away from the wall edge.

Step 3: Replace the baseboard (it should cover the expansion gap). Within 24 to 48 hours, the peaking should flatten as the floor relaxes into the newly available space.

Step 4: Also check for molding or transition strips that may have been nailed through the laminate, pinning it to the subfloor and preventing expansion. Remove any fasteners driven through the floating floor.

Addressing Buckling in Laminate Flooring

Buckling is a more severe version of peaking where entire planks lift significantly off the subfloor. While peaking creates small ridges at seams, buckling creates a noticeable wave or hump in the floor.

Common Causes of Buckling

• Water damage: Moisture from a leak beneath the floor swells the fiberboard core.
• No expansion gap: Same mechanism as peaking, just more severe.
• Poor subfloor preparation: Uneven subfloors create hollow spots where planks can lift.
• Direct sunlight: Prolonged sun exposure through large windows heats the floor unevenly.

How to Fix Buckling

First, identify and eliminate the cause. If water is involved, dry the subfloor completely (this may take days with fans and dehumidifiers). Then check and correct expansion gaps as described above. For subfloor issues, you may need to remove the laminate, level the subfloor with self-leveling compound, and reinstall.

If the fiberboard core is swollen from moisture, those planks cannot be salvaged and must be replaced.

Eliminating Squeaks in Laminate Flooring

Squeaking laminate is annoying but rarely indicates structural damage. Squeaks happen when planks rub against each other, the underlayment, or an uneven subfloor.

Quick Fixes for Squeaky Laminate

Talcum powder or powdered graphite: Sprinkle along the seams where the squeak occurs and work the powder into the joints by walking back and forth. The lubricant reduces friction between planks.

Underlayment issue: If the squeak is widespread, the underlayment may have compressed or shifted. Unfortunately, fixing this requires removing the laminate, replacing the underlayment, and reinstalling — a significant project.

Subfloor leveling: A squeak that occurs in the same spot every time usually means the subfloor is uneven at that point, creating a hollow area where the laminate flexes. Injecting construction adhesive through a small drilled hole can fill the void and stop the squeak.

Tools and Materials Comparison

When to Repair vs Replace Laminate Flooring

Not every damaged laminate floor is worth repairing. Here is a straightforward decision framework.

Repair Makes Sense When:

• Damage is limited to a few planks or a small area.
• You have matching replacement planks available.
• The subfloor beneath is in good condition.
• The floor is less than 10 years old and the rest looks good.
• The issue is cosmetic (scratches, small chips) rather than structural.

Replacement Makes Sense When:

• Water damage is widespread across multiple areas.
• The laminate is discontinued and you cannot find matching planks.
• The floor is over 15 years old with general wear throughout.
• Buckling or peaking affects large sections despite correct expansion gaps.
• You plan to sell the home and the floor looks dated — a fresh laminate installation offers better return than patching.

Cost Comparison: Repair vs Replace