Subfloor Thickness Help Text

Subfloor Thickness


Please enter the thickness of the plywood installed on top of the joists for your flooring system. The subfloor is usually the first layer of flooring. However, you may have multiple layers of subfloor beneath the floor covering. Please enter the total thickness of wood below the floor covering.

The subfloor thickness helps us calculate water temperatures needed for the heat to penetrate the floor above.