Aqua Mix Grout Sealer is a water-based sealer that resists water-, oil-, and acid-based contaminants. This grout sealer simplifies maintenance and does not change the appearance of the grout. Aqua Mix Grout Sealer is a low maintenance product. For best results, use Aqua Mix Concentrated Stone and Tile Cleaner as your routine cleaner. Aqua Mix Grout Sealer is recommended for cementitious sanded and un-sanded porous grout joints for ceramic tile installations. It may be used for interior and exterior applications and allows vapor transmission.