Sealer

A penetrating or film-forming product applied to raw wood before staining or between finish coats to control moisture absorption, improve stain uniformity, and enhance adhesion of subsequent coats. Sanding sealers fill wood pores quickly and sand easily, creating a smooth foundation for topcoats. On countertops like granite and marble, sealers penetrate the stone to create an invisible moisture barrier.

Specifying this for a job? Captivating Pro members buy at 20–40% off retail and get cut sheets before rough-in.