MasterProtect® H 400, 205L

MasterProtect® H 400 (formerly Enviroseal 40) is a water-based, 40% alkylalkoxysilane penetrating sealer. It provides long-lasting protection against moisture intrusion, freeze/thaw cycles, and chloride intrusion. It is also breathable. It is suitable for most concrete surfaces in both interior and exterior locations and both horizontal and vertical applications.