Why is my laminate flooring buckling and raising at the seams?

<b>Why Your Laminate Flooring Is Buckling in UAE Homes</b> <ul> <li><b>Primary Cause — Pinch Points and Lack of Expansion Space:</b> In the UAE, laminate flooring experiences severe expansion and contraction due to continuous air conditioning usage. Running AC constantly at 20°C–22°C creates low indoor humidity, but when AC is turned off during travel or when summer outdoor humidity spikes above 80%, indoor moisture levels shift rapidly. Without a proper 8mm to 10mm expansion gap along walls and hallway transition strips, expanding planks press against walls and door jambs, forcing the seams upward into a peak.</li> <li><b>Secondary Cause — Subfloor Moisture from Concrete Slabs:</b> Almost all residential properties in Dubai, Abu Dhabi, and the Northern Emirates feature concrete subfloors. Ground-floor villas (such as in Arabian Ranches, Dubai Hills, JVC, or Al Reem Island) are especially prone to moisture rising through the concrete slab. If a certified 0.2mm (6-mil) moisture vapor barrier was not installed beneath the underlayment per local building standards, ground moisture absorbs directly into the MDF core, causing edges to swell, cup, and buckle.</li> </ul> <b>How to Identify the Exact Cause</b> <ul> <li><b>Check for Space vs. Swelling:</b> If the plank surfaces are completely flat and only lifting at a single seam near the hallway, it is an expansion space issue. If the plank edges look curled, dark, or swollen across multiple boards, subfloor moisture is creeping up.</li> </ul> <b>How to Fix the Buckling</b> <ol> <li><b>Remove Trim and Threshold Profiles:</b> Take off the baseboards and hallway transition profiles (aluminum or wood threshold strips commonly installed in UAE apartments).</li> <li><b>Inspect the Perimeter Gap:</b> Check if the laminate is touching drywall, aluminum door frames, or threshold tracks. Leading UAE flooring installers like Floorworld and Swiss Krono specify a clear 8mm to 10mm perimeter gap.</li> <li><b>Trim the Overlapping Edges:</b> Use an oscillating multi-tool to trim back any planks pressing against walls or frames. Once the pressure is released, the peaked rows will settle back flat within a few hours.</li> <li><b>Verify Underlayment Moisture:</b> If the floor remains raised after trimming, lift a plank near the peak. Check if the concrete subfloor or underlayment feels damp. If moisture is present, you will need to lift the affected area, dry the slab, and lay a proper plastic vapor barrier before re-installing new planks.</li> </ol>