Flash Harry Slurry Seal is a cement-based waterproofing slurry designed to create a durable waterproof barrier on masonry, concrete, and cement surfaces. When mixed correctly, this high-performance waterproofing system provides excellent adhesion and long-lasting protection against water penetration in both interior and exterior applications.
Ideal for waterproofing walls, reservoirs, fish ponds, retaining walls, and damp problem areas, Slurry Seal penetrates and bonds directly to cementitious surfaces to deliver reliable waterproof protection in demanding conditions.
