Stone Impregnator and Protector is Superior Stone Products’ best heavy duty sealing agent. This Impregnator is used by professional granite fabricators throughout the world as their premier sealer. Works wonders on any porous stone including granite, marble, limestone, slate, brick, and grout. Composed of a fluoropolymer bonding formula that is solvent-based and breathable, Superior Impregnator and Protector is absorbed deep into the stone surface eliminating any weaknesses that may lead to staining. Can be used for interior and Exterior applications. Comes in a larger 1 quart bottle.