You don’t have to feel overwhelmed about fixing laminate flooring that lifts. Laminate flooring that buckles or comes up at the seams creates an eyesore and a tripping hazard in your home. You might be dealing with laminate flooring lifting at edges, laminate flooring lifting due to water, or boards buckling in the middle of the room. We’ve seen these problems many times in homes with climates of all types and installation ages.
The good news? You can fix most cases of laminate floor coming up without replacing your whole floor. We’ll walk you through exactly how to fix laminate floor lifting in this piece. These practical and tested methods address the root cause of the problem.
Why Laminate Flooring Lifts and How to Identify the Problem
Image Source: BC FLOORS
Raised laminate affects about 15% of installations. Learning about what causes laminate flooring buckling helps you fix the problem correctly and prevent it from happening again.
Moisture and Water Damage
Moisture is the number one cause of laminate floor coming up. Bathrooms and kitchens face higher risk due to raised humidity levels in these spaces. The high-density fiberboard core swells and expands at the time moisture penetrates the planks. This swelling creates upward pressure that causes buckling and lifting. Water can come from spills left unattended, wet mopping with excessive water, plumbing leaks, or moisture rising from concrete subfloors without vapor barriers. The top image layer and wear layer begin to delaminate from the core material once laminate becomes supersaturated with water.
Improper Installation and Missing Expansion Gaps
Laminate operates as a floating floor system that needs room to expand and contract. The planks push against walls during expansion at the time installers skip or minimize expansion gaps (¼ inch around walls and fixed objects). This creates compressive stress that forces the floor to buckle upward at seams or in the middle of rooms. Failing to adapt laminate planks to room conditions for 48 to 72 hours before installation causes problems like these. The material adjusts after installation without acclimation, and this leads to movement and lifting.
Uneven Subfloor Issues
An uneven subfloor creates instability that telegraphs through floating floors. Waves, dips, or humps in the base surface cause planks to flex, gap, or lift. Concrete subfloors require damp-proof membranes to block moisture from below. Moisture migrates upward into the laminate core without this barrier. Subfloors should be flat within 3/16 inch over 10 feet for laminate installation.
Temperature and Humidity Changes
Seasonal fluctuations cause laminate to expand in humid conditions and contract at the time air becomes dry. Humidity levels above 55% allow moisture to penetrate the material and make planks swell. Indoor humidity between 35% and 55% protects your floors from expansion damage. Temperature swings between 60°F and 80°F paired with controlled humidity create stable conditions.
Signs Your Laminate Floor Is Coming Up
Early detection prevents minor problems from becoming major ones. Watch for these warning signs:
- Visible gaps appearing between planks
- Buckling or warping in specific areas
- Uneven or bouncy surfaces at the time of walking
- Planks separating from the subfloor
- Clicking or popping sounds during foot traffic
- Raised boards creating humps in the floor
Tools and Materials You Need to Fix Lifting Laminate
Gather the right tools before you start your repair. This saves time and prevents mid-project trips to the hardware store. The specific tools you need depend on the repair method, but having these essentials on hand covers most lifting laminate scenarios.
Basic Hand Tools
A rubber mallet works better than a standard hammer when you tap planks back into position without damaging the surface. Pair it with a tapping block that conforms to the tongue-and-groove profile on laminate edges. A pry bar helps remove baseboards and molding near damaged areas. It also pulls the final row of planks into place when walls prevent access with a tapping block. You’ll need a hammer and chisel or putty knife to remove baseboards. A utility knife cuts away damaged edges or trims planks to size. Wall spacers maintain the expansion gap during repairs. If original spacers were too large, replace them with smaller ones to prevent buckling.
Adhesives and Fasteners
Wood glue suitable for laminate creates strong bonds for loose planks. Contact cement provides heat and moisture resistance up to 250°F. This makes it reliable for kitchens and bathrooms where standard adhesives fail. The adhesive needs flexibility to accommodate thermal expansion and contraction while it maintains bond strength. Caulk or silicone sealant seals gaps in waterproof applications. Painter’s tape holds repairs in place during glue curing. You’ll also need heavy objects like books or weights to press glued sections flat while they dry.
Measuring and Detection Equipment
A moisture meter identifies water damage before you start repairs. Excess moisture in subfloors or planks causes installation failure, so testing prevents wasted effort on floors that need drying first. A tape measure will give accurate plank cutting and expansion gap sizing. A straight edge checks subfloor flatness and reveals high or low spots that cause lifting.
How to Fix Laminate Floor Lifting: Step-by-Step Methods
Choose your repair approach based on damage severity and location. Each method addresses specific lifting scenarios you identified during inspection.
Method 1: Fixing Minor Lifting with Glue and Weight
Planks still in good condition with minor lifting need cleaning first. Apply gentle pressure to test if the section lays flat. With click-lock systems, tap joints gently using a rubber mallet and work from secured areas toward lifted sections. Use scrap laminate as a buffer to protect the surface. Glued systems require a different approach: lift the affected plank with a putty knife, apply a thin bead of wood glue to the joint, then press down firmly. Apply weight using heavy books and leave them there 24 hours. Secure with painter’s tape across seams while the repair sets.
Method 2: Creating Expansion Gaps for Laminate Flooring Buckling
Buckling that results from insufficient expansion gaps requires removing baseboards adjacent to affected areas. Measure the space between laminate and walls. Proper gaps should be approximately 1/4 to 3/8 inch. Use a chisel or putty knife and hammer to pry off baseboards and relieve pressure. Spacers between walls and boards should be replaced with smaller ones if they exist. Boards that sit flush against walls need trimming using an oscillating multi-tool or toe-kick saw. Weigh down trimmed boards with heavy objects and leave them 24 hours. Reinstall baseboards using finishing nails.
Method 3: Repairing Laminate Flooring Lifting at Edges
Edge lifting stems from moisture exposure or missing expansion gaps. Check the affected areas for water leaks or spills. Remove baseboards to verify proper expansion space exists around the perimeter. Dry the area using fans and dehumidifiers. Once dry, use weighted press or heavy objects to flatten lifted edges. Persistent edge issues may need wood glue applied while lifting the edge. Waterproof glue works best if moisture caused the problem.
Method 4: Fixing Laminate Flooring Lifting Due to Water
Water damage requires action within the first 24 hours. Use a moisture meter to check both laminate and subfloor. Readings above 12% indicate moisture issues requiring resolution before repairs. Remove standing water using towels, mop, or wet-dry vacuum. Remove laminate planks in affected areas starting at room edges. Assess the subfloor for signs of damage or moisture. Dry the subfloor using fans and dehumidifiers or wet-dry vacuum. Allow adequate drying time—several days depending on water amount and humidity. Check for mold that appears as black, green, or white spots. Inspect planks for warping, buckling, or discoloration. Most water-damaged laminate cannot be repaired and requires replacement.
Method 5: Replacing Damaged Planks
Severe damage affecting multiple planks means removing baseboards adjacent to affected areas. Identify the damage starting point and work backward toward the wall. Disassemble planks by lifting at a 30-degree angle from outer edge toward wall. Mid-room damage requires a circular saw set to flooring thickness. Mark 1 inch from each end of the damaged board. Make plunge cuts across one end, then cut along the center between end cuts. Bend and remove flooring by loosening tongue and groove. Cut away tongue and groove from replacement planks using a utility knife. Apply wood glue to edges and tap into place. Weigh down new flooring and adjacent boards until glue cures. Click-lock installations near walls require working from the nearest wall toward damage. Label removed pieces with painter’s tape so reinstallation becomes easier. Reinstall planks according to manufacturer instructions and ensure proper interlocking. Allow proper expansion gaps along all walls and fixed structures.
Prevention Tips and When to Call a Professional
How to Prevent Future Lifting
After you complete repairs, implement moisture control measures. Use dehumidifiers in humidity-prone areas and clean spills right away. Maintain indoor humidity between 35% and 55% to prevent expansion damage. Place entrance mats at exterior doors to trap dirt and moisture before they reach your laminate. Avoid wet mopping or steam cleaning. Excessive water causes damage. Put felt pads under furniture legs to prevent scratches and indentations. Allow new laminate to adapt 48-72 hours before installation in the room’s temperature and humidity conditions.
Maintenance Best Practices
Remove loose dirt with dust mops or gentle vacuums without beater bars. Use only soap-free cleaners designated to use on laminate flooring. Test them in inconspicuous areas first. Never use steel wool, scouring powders, or buffing machines. Harden sticky spots with ice and remove them gently using dull plastic scrapers. Check around sinks, toilets, and appliances for leaks. Conduct routine inspections to identify minor problems before they develop into serious ones.
Cost and Time Expectations
Minor repairs like fixing scratches cost between $100 to $300. Extensive repairs with multiple plank replacements range from $500 to $1,500 or more. DIY projects need one to two days for board removal and replacement. Matching existing flooring patterns or colors may increase costs and extend repair timelines.
When DIY Isn’t Enough
You need professional help when buckling affects large flooring areas, major water damage or mold growth appears, subfloor damage exists, or previous DIY attempts fail. Warranty requirements often mandate professional repairs to maintain coverage. Professionals possess specialized tools and expertise to address complex problems like severely uneven subfloors or extensive moisture damage.
Conclusion
You now have everything needed to fix laminate flooring that’s lifting in your home. Start with the simplest solutions like checking expansion gaps and addressing moisture issues first. Most lifting problems can be resolved with simple tools and patience.
Prevention beats repair every time, so maintain proper humidity levels and clean spills right away. Your floors will thank you for it, and you’ll avoid replacements that get pricey down the road.
Key Takeaways
Master these essential strategies to fix and prevent laminate flooring lifting issues in your home:
• Moisture is the #1 culprit – Control humidity between 35-55% and clean spills immediately to prevent 80% of lifting problems.
• Check expansion gaps first – Ensure ¼ to ⅜ inch gaps around walls; missing gaps cause buckling that forces floors upward.
• Act fast on water damage – Address moisture within 24 hours using fans and dehumidifiers before permanent damage occurs.
• Use the right repair method – Minor lifting needs glue and weight; severe damage requires plank replacement starting from room edges.
• Prevention saves thousands – Regular maintenance and proper humidity control prevents costly repairs ranging from $500-$1,500.
Most laminate lifting issues stem from preventable causes like excess moisture or improper installation gaps. By addressing the root cause rather than just symptoms, you can restore your floors and prevent future problems. Remember that extensive water damage or large affected areas may require professional intervention to maintain warranties and ensure proper repairs.
FAQs
Q1. What causes laminate flooring to buckle and lift up? The most common causes include moisture damage from spills or humidity, insufficient expansion gaps around walls (should be ¼ to ⅜ inch), improper installation without adequate acclimation time, uneven subfloors, and seasonal temperature or humidity changes. Moisture is the number one culprit, affecting approximately 15% of installations.
Q2. Can I fix lifted laminate flooring by gluing it back down? Yes, minor lifting can often be repaired with glue. Clean the area thoroughly, apply wood glue or contact cement underneath the lifted section, press it down firmly, and place heavy objects like books on top for 24 hours while it cures. Use painter’s tape to secure the seams during drying.
Q3. How do I know if my laminate flooring has water damage? Use a moisture meter to check both the laminate and subfloor—readings above 12% indicate moisture problems. Visual signs include warping, buckling, discoloration, black/green/white spots (mold), and planks separating from the subfloor. Act within 24 hours of water exposure to prevent permanent damage.
Q4. Do I need to replace the entire floor if some planks are lifting? No, most lifting issues can be fixed without replacing the entire floor. Minor problems can be resolved with glue and weight, while more severe damage may require replacing only the affected planks. Complete floor replacement is rarely necessary unless there’s extensive water damage or widespread buckling.
Q5. When should I call a professional instead of fixing it myself? Professional help is needed when buckling affects large areas, significant water damage or mold is present, the subfloor is damaged, previous DIY attempts have failed, or warranty requirements mandate professional repairs. Professionals have specialized tools to address complex issues like severely uneven subfloors.
