CureHard 309™ is a clear, water-based, membrane forming, hardener, densifier, curing compound that meets the criteria for the ASTM C-309, for curing compound moisture retention requirements. CureHard 309™ is an environmentally friendly compound that contains no solvents and has a VOC content that is compliant in all areas of the United States. A single component material that cures, densifies and hardens at the same time creates a strong and abrasion resistant surface. CureHard 309™ will stand up to commercial and industrial floors that are looking for long-term protection against moisture, dirt, abuse, and heavy wear.