This Marble and Granite Sealer and Restorer is an excellent product for protecting, sealing and restoring hard surface floors. It penetrates the porous portion of the floor sealing from within. This protects the floors from stains setting in, and mold and mildew from growing within the floor. It also repels water stains from seeping in by leaving the water on top of the seal. This allows for easy clean-up of calcium deposits left by hard waters. Lundmark “The Hallmark of Quality” – A family owned company that manufactures high quality products for both commercial and retail use. 100% manufactured in the USA. Lundmark is the brand that brought commercial quality to the retail market. Lundmark products have been time and industry tested for decades and our amazing customer base is the reason for Lundmark’s success.