A retro fit basement is nearing completion, Due to the size of the basement, a reinforcement wall using a waterproof concrete system is being cast inside of the underpinning works. This will provide a dry environment. We use both Caltite and Triton waterproof concrete systems. Often membrane systems are installed forming a secondry waterproofing barrier. The systems, Delta membranes, Newton Membranes, Oldroyd membrane and Triton Isola membranes are fitted in conjunction with sump and pumps to remove any ingress of water. We are approved installers for these products.