Repair kits are available in 10lb (approximate coverage 10 sq. ft.) & 25lb (approximate coverage 25 sq. ft.) for smaller jobs. FlexCrete is a two-part system consisting of a unique polymer liquid and a composite compound of dry materials that when mixed properly creates FlexCrete a specialized micro-topping material that is highly adhesive, waterproof and flexible. FlexCrete Polymer was invented by us in 2010 and we are proud to be the first cementitious waterproofing product on the market. Since then, we have made continuous improvements to our formula and manufacturing processes which are unique and trade secret.