Grout sealer that protects cementitious grout joints and prevents stains. Protects cementitious grout joints from water and humidity. Makes cleaning fast and easy. Perfect for mosaics Keeps grout joints looking new for years. Can be used both indoors and outdoors. Water based. Why should you choose FILA? Because FILA products work. Used in the most prestigious architectural projects worldwide, FILA cleaners and sealers are recommended by more than 200 stone and tile manufacturers. Trusted professionals use FILA and rely on our technical assistance for the most effective surface care solutions.