Brushbond Plus is a two-component polymer-modified cementitious waterproof coating for concrete and masonry. It's a pre-mixed powder (special cement and additives) combined with a liquid polymer. When mixed, it creates a free-flowing, waterproof, non-toxic coating with high strength, density, resiliency, and adhesion. It's applied to concrete and mortar structures to prevent water infiltration and can be applied with a roller, brush, spray, or trowel.