To achieve a flat subfloor, start by removing all staples, nails, and debris. Use a long level or straightedge to identify deviations. High spots in concrete must be ground down, while high spots in wood should be sanded. Low spots must be filled with a compatible patching compound or a self-leveling cementitious underlayment. Ensuring a level surface prevents the locking mechanisms of floating floors from snapping and eliminates hollow sounds when walking, ensuring a professional, stable result.
Ask an ExpertInstallation and Preparation
How should the subfloor be leveled to ensure a successful hard surface install?
Leveling the subfloor involves identifying high and low spots using a straightedge, grinding down protrusions, and applying self-leveling compound to depressions. A perfectly flat subfloor is mandatory to prevent structural failure in hard surface installations.