The Zero Line Impregnating Sealer is Superior's most versatile and easy-to-use natural stone sealer. Its exclusive fluoropolymer bonding provides ultimate penetrating protection against staining. It is solvent-based and allows for easier cleaning. The sealer will protect all natural stone surfaces, dense or porous, polished or honed. It can be used on both interior and exterior applications. It's sold in 2 oz spray bottles for ease of use. This small 2oz bottle contains enough sealer for up to *45 Sq. Ft of natural stone countertop. * Depending on usage.