One Gallon treats up to 800 square feet. SafeGrip is an anti-slip application that will eliminate slippery tile floors when they become wet. When this clear liquid is applied, it creates a microscopic texture on the surface of the tile through an etching process. You can't see it or feel it when it is dry, but when wet; it becomes absolutely slip proof. This safe and easy application will not harm the grout or surrounding areas. SafeGrip is not a coating so it won't chip, peel or wear away. It actually micro etches the surface of the tile to create an invisible tread on the surface of the tile. SafeGrip is a permanent treatment and guaranteed to last for years . SafeGripTM anti-slip applications will make your tile floors ADA compliant. Independent test performed by the Tile Council of America showed an increase of nearly 100% in slip resistance when the tile was treated with our product. It works indoors or out on ceramic, porcelain, travertine, granite, marble, quarry and concrete. Will not work on vinyl, acrylic , fiberglass or epoxy surfaces .This is the same product used by professionals to make tile floors slip resistant. Use for: RESIDENTIAL: Kitchen, Hallway, Bathroom, Entry Way, Living Room etc. COMMERCIAL: Hallways, Restroom, Entry Ways, Reception Area etc. Pool Deck, Locker Room, Spa Commercial Kitchen Floor types: Porcelain, Ceramic, Marble, Travertine ,Granite, Quarry, Unsealed Concrete . Long Lasting - Won't Yellow - Satisfaction Guarantee