Laminate flooring is a popular choice for homeowners thanks to its durability, affordability, and ease of installation. However, even the highest-quality planks can sometimes develop issues, with one of the most common being lifted edges or corners. This problem, often caused by environmental changes or installation errors, not only creates an unsightly gap but can also lead to more significant damage, such as snagging, tripping hazards, or moisture seeping into the core.
If you are currently dealing with this issue, you are likely looking for a clear, step-by-step solution. The good news is that fixing lifted laminate flooring is often a manageable DIY project, provided you address the root cause. This guide will walk you through the specific methods to re-secure your boards, from simple weight-based solutions to more involved repair techniques, ensuring your floor looks seamless again.
Identifying the Cause Before You Start
Before attempting any repair, it is crucial to understand why the laminate is lifting in the first place. Jumping straight to re-gluing or nailing without diagnosis will likely result in the problem recurring. The cause is almost always related to expansion and contraction, but the specific trigger will determine the best fix.
Common Culprits
- Humidity and Moisture: Wood laminate expands when it absorbs moisture in humid conditions and contracts in dry air. If the floor was installed without proper acclimation or without an adequate expansion gap, the planks have nowhere to go but up.
- Improper Installation: If the planks were glued directly to the underlayment without leaving a gap, or if the tongue and groove was not properly engaged, the floor cannot move naturally and will buckle.
- Heavy Furniture or Impact: Dragging heavy furniture can physically break the tongue or compromise the locking mechanism, causing a joint to separate.
Method 1: The Weight and Time Approach
This is the preferred first step for minor lifting where the locking mechanism is still functional, and the subfloor is stable. This method works best for raised areas rather than gaps, relying on the natural expansion of the adhesive or the flexibility of the material to snap back into place.
How to Execute
- Thoroughly clean the area around the lifted section to ensure no debris prevents a tight bond.
- Apply a generous amount of laminate floor adhesive or wood glue to the tongue of the raised plank. If the plank is concave (curving upward), you may need to inject glue deep into the crack using a syringe.
- Press the plank firmly down into its proper position, aligning it with the neighbors.
- Place a clean tea towel or cloth over the plank.
- Set a heavy object—a stack of books, a dumbbell, or a sandbag—on top of the cloth.
- Leave the weight in place for 12 to 24 hours to allow the glue to cure and the fiberboard to flatten.
Method 2: The Pull-Up Technique
If the lifting is severe or the adhesive has already failed, simply applying weight might not provide enough grip. This method involves physically pulling the entire row away from the wall to re-engage the lock and then re-securing the perimeter.
Step-by-Step Guide
Start by removing the baseboard or quarter round molding at the bottom of the wall. You will likely need a pry bar and a hammer, but do this carefully to avoid breaking the trim.
Once the row is loose, gently lift the planks at a 45-degree angle. You are looking to expose the tongue of the plank in the second row. Apply a line of adhesive to this tongue.
Slowly and carefully lower the planks back down, pressing them tightly against the wall and the previous row. Use a rubber mallet to tap the joints tight. Once the adhesive has set, re-install the baseboard, which will help hold the edge of the floor in place against future expansion.
Method 3: The Insertion Repair
Sometimes, a single plank or a small section is the problem. Perhaps a dog slipped and scratched the edge, breaking the tongue, or a board near the door has consistently lifted due to traffic. In these cases, replacing the entire row is overkill, and a targeted fix is more efficient.
Tools You Will Need
| Replacement Plank | Saw (hand or circular) |
| Wood Glue | Putty Knife |
| Rubber Mallet | Safety Glasses |
Begin by cutting a small piece of scrap laminate to the exact width of the gap. Coat the tongue of the plank adjacent to the gap with glue. Slide the small piece into the gap, acting as a wedge. As you tap it in with the mallet, it will force the broken tongue back up into the groove of the broken plank, relocking the system. Wipe away any excess glue immediately.
When to Call a Professional
While most lifted floor issues can be handled with patience and the right tools, there are scenarios where expert intervention is necessary. If you notice that the subfloor itself is uneven, warped, or rotting, or if the lifting is part of widespread structural movement, DIY fixes will only provide a temporary bandage.
Additionally, if your laminate flooring is attached to a concrete slab and you suspect moisture vapor is the root cause, addressing the moisture problem requires specialized moisture barriers that a contractor can assess. Ignoring these signs can lead to mold growth and permanent floor damage.
Preventing Future Lifting
Once you have successfully repaired the lifted section, your work isn’t done. Preventing recurrence involves managing the environment and protecting the perimeter of the room.
- Control Humidity: Keep indoor humidity levels between 30% and 50%. Use a dehumidifier in the summer and a humidifier in the winter to maintain this balance.
- Maintain Expansion Gaps: Never glue laminate directly to the wall. The quarter round baseboard you removed earlier is there for a reason—it hides the gap and allows the floor to "float."
- Use Felt Pads: Attach felt pads to the legs of all furniture to distribute weight evenly and prevent the laminate from chipping or bowing under pressure.