SURFACE BARRIER is a “state-of-the-art” water-based fluoropolymer impregnator that penetrates deep into porous surfaces, creating a long lasting, invisible barrier that allows vapor transmission. SURFACE BARRIER repels and protects against dirt, oil, food stains, grease, mold, mildew and waterborne soils. SURFACE BARRIER can be used on all indoor and outdoor natural stone surfaces including: marble, granite, limestone, onyx, travertine, terrazzo, flagstone, sandstone, slate, clay tile, Saltillo tile, terra cotta, quarry tile, cantera, unglazed ceramic tile, pavers, grout, concrete and masonry surfaces. SURFACE BARRIER is ideal for indoor use on floors, kitchen countertops, showers, tubs, fireplaces, etc. SURFACE BARRIER is also designed for outdoor use on stone surrounds, terraces, balustrades and swimming pool surrounds. Classified by Underwriters Laboratories® for slip resistance.