The expansion gap is arguably the most critical element in the installation of a floating floor. Because luxury vinyl is a synthetic product that expands and contracts as ambient temperatures and humidity levels change, it must have a designated 'breathing room' at every vertical obstruction, including walls, pipes, door frames, and kitchen islands. When this gap is too small or entirely absent, the floor has no room to grow as the temperature rises. The resulting internal pressure eventually causes the planks to lift, peaking at the joints, or buckling entirely as the floor fights against the unyielding walls. Once the floor hits the perimeter, the energy from that expansion must go somewhere, and it almost always results in structural damage to the flooring. In addition to causing the center of the room to rise, an undersized gap can lead to the floor pressing against cabinets or door jambs, which can cause squeaking, rubbing, or even the eventual failure of the locking mechanism as the joints are forced together under extreme tension. Following the manufacturer’s specific requirements for gap sizes—usually around 1/4 to 3/8 of an inch—is not a suggestion; it is a structural necessity for the longevity of the floor system.
Key considerations
- LVP expansion gap too small
- laminate no wall gap
- floating floor pressure
- floating floor expansion gap
- LVP buckling
- laminate movement