Why Is My Laminate Floor Buckling Causes and Solutions
Buckling is one of the most serious problems with laminate flooring. The planks lift at the edges, creating a ridge or wave across the floor. Buckling can happen soon after installation or years later. This guide explains the causes and solutions.
Cause 1 Insufficient Expansion Gap
Laminate expands and contracts with temperature and humidity changes. An expansion gap around the perimeter allows this movement. If the gap is too small, the expanding planks have nowhere to go. They push against each other and buckle.
Check the expansion gap by removing a baseboard. The gap between the laminate edge and the wall should be 8mm to 12mm. If the gap is under 5mm, this is likely the cause.
Solution: Remove the baseboards around the room. Use a circular saw to trim the edge planks. Cut 3mm to 5mm from the perimeter. Reinstall the baseboards. This gives the floor room to expand.
Cause 2 Moisture Damage
Laminate core absorbs moisture. If a spill, leak, or high humidity has allowed moisture to reach the core, the planks swell. Swollen planks press against each other and buckle.
Check for signs of moisture damage: edge swelling, dark spots at joints, or a musty smell. Test the subfloor moisture level with a moisture meter.
Solution: Fix the moisture source first. Then replace the damaged planks. Swollen laminate does not return to its original shape after drying.
Cause 3 Heavy Loads
Excessive weight on the floor can cause buckling. Heavy furniture, appliances, or storage stacks can compress the laminate and cause it to buckle at the edges.
Solution: Redistribute the load. Move heavy items to different locations. Use load distribution plates under heavy furniture. Check if the buckling resolves after removing the weight.
Cause 4 Improper Acclimation
Laminate must acclimate to the room before installation. If the planks were installed when the room was dry and winter heat was running, the planks were at their most contracted state. When humidity rises, they expand and buckle.
Solution: This is difficult to fix without lifting the floor. Run a dehumidifier during humid months. The buckling may reduce when humidity drops in winter. For severe buckling, the floor needs reinstallation.
Cause 5 Subfloor Issues
An uneven subfloor can cause laminate to buckle. High spots create pressure points. Low spots cause the planks to bridge and flex.
Solution: Lift the floor in the affected area. Level the subfloor. Reinstall the planks.
When Buckling Requires Full Replacement
Severe buckling usually requires replacing the entire floor. Signs that replacement is needed:
- Buckling in multiple areas across the room
- Locking mechanism damage from the pressure
- Widespread moisture damage
- Floor has buckled and been repaired multiple times
Prevention Tips
The best prevention is proper installation with adequate expansion gaps, proper acclimation, and moisture protection. Maintain consistent indoor humidity between 40 and 60 percent year round.
About PROLEADER
PROLEADER provides detailed installation guidelines with every laminate order. Contact us for technical support if you experience buckling issues with your floor.
