Laticrete Stonetech Stone Sealer - 1 Quart Provides economical, natural look protection for all natural stone, masonry and grout. Formulated with advanced, water-based fluorochemicals to protect against oil and water-based stains. Advanced penetrating microbond protection Standard protection against all stains Makes cleaning stone easier Preserves natural look. Water-based low-solids coating Int. & Ext. Use on Natural stone such as marble, granite, limestone, slate, terrazzo, travertine & sandstone.