LVP is flexible but relies on its locking joints for stability. If the subfloor has high or low spots, the planks cannot sit flush, causing uneven pressure on the locking systems. Over time, this results in joint fatigue, separation, and potential damage to the tongue-and-groove profile. Industry standards typically require the subfloor to be flat within 3/16 inch over a 10-foot radius. Proper leveling or self-leveling compounds are necessary to meet these performance requirements.
Ask an ExpertLuxury Vinyl
How does subfloor levelness impact luxury vinyl plank performance?
Luxury vinyl plank requires a level, flat subfloor to prevent joint stress, separation, or structural failure. When the subfloor exceeds allowable deviation thresholds, the mechanical locking mechanisms can fatigue and disconnect under foot traffic, leading to gaps or audible clicking.