To ensure long-term stability for moisture-sensitive materials like hardwood or laminate, the subfloor must first be tested for relative humidity and moisture emission rates. If levels exceed manufacturer specifications, a moisture mitigation system, such as a roll-on vapor barrier or a specialized underlayment, must be applied. The surface must also be leveled, smoothed, and sanded to ensure there are no protrusions that could telegraph through the new flooring or cause uneven support that leads to joint separation.
Ask an ExpertInstallation and Preparation
What steps are required to prepare a subfloor for moisture sensitive flooring?
Preparing a subfloor for moisture-sensitive flooring involves thorough moisture testing, structural leveling, and the application of an effective moisture vapor barrier or primer. Always ensure the subfloor is clean, dry, and free of any debris, chemicals, or existing floor coverings.