A level subfloor is the foundation of a successful installation. You can check for levelness by placing a straight edge or a long level at various points across the floor, measuring the clearance underneath for dips. Alternatively, a professional laser level provides precise measurements of high and low spots. If the deviation exceeds the flooring manufacturer’s tolerances—usually measured in fractions of an inch over a 10-foot span—you must use leveling compounds to create a flat, stable surface.
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How can I verify if a subfloor is level?
To verify if a subfloor is level, use a long spirit level or a laser level across the entire room. Measure for gaps or deviations that exceed manufacturer tolerances. If the subfloor is uneven, it will likely require self-leveling compound or sanding to ensure a flat base.