NS200 is a breakthrough, modified siliconate water repellent technology for protecting many materials and preventing salt water erosion. NS200 will also prevent most efflorescence in concrete, materials containing Portland cement and alkali surfaces such as limestone, marble or grout. NS200 is designed foruse as a salt water and efflorescence repellent on patios, decks, walkways, floors, showers, decorative landscape stone, around swimming pools, spas and waterfalls, grout and unglazed tile floors, kitchens, bathrooms and showers. Treated surfaces also discourage the growth of discoloring mold and mildew.