Masterseal 501 Cementitious Waterproofing

MasterSeal 501 is a high-performance cementitious waterproofing system designed for concrete and masonry surfaces. It penetrates deep into the substrate to form insoluble crystals that block water pathways, providing permanent waterproofing and protection. Ideal for basements, water tanks, retaining walls, and below-grade structures. Applied by brush or spray, it resists positive and negative water pressure and is non-toxic, making it safe for potable water contact. Protect your structures with MasterSeal 501 – crystal-based waterproofing for lasting performance. Order today!