Site-finishing requires a high-quality wood product capable of withstanding the mechanical sanding process. Factors include the total thickness of the board and, specifically, the depth of the wear layer—the wood above the tongue and groove—which determines how many times it can be refinished. Furthermore, the wood must be properly acclimated to the home's moisture conditions to prevent gapping or cupping after the finish is applied. The surface must be clean and free of wax, oil, or previous finishes that could cause bonding failures. Consulting with a professional installer is essential to ensure the wood species and construction are appropriate for the desired sand-and-finish treatment.
Ask an ExpertHardwood
What technical factors determine if a hardwood floor is suitable for site-finishing?
A hardwood floor is suitable for site-finishing if it has enough wear layer thickness to withstand sanding, is made of a stable wood species, and is free from deep factory-applied coatings or contaminants that would impede the adhesion of new finish layers.