Master Seal 501

Master Seal 501 is a high-performance, polymer-modified cementitious waterproofing compound designed for both interior and exterior applications. It provides a durable, flexible, and crack-resistant waterproof barrier on concrete, masonry, and plaster surfaces. The product is easy to apply by brush, roller, or spray and adheres strongly to substrates, preventing water ingress and protecting structures from moisture damage. Master Seal 501 is ideal for basements, water tanks, terraces, balconies, and retaining walls.