Krystol Internal Membrane (KIM) Waterproofing Concrete Admixture turns concrete mass into a waterproof barrier. It is a dry powder added during mixing. When combined with water, KIM’s chemicals reacts to form millions of needle-like crystals. It permanently waterproofs concrete, increases reliability and quality control, shaves weeks off the construction schedule, and reduces the cost of maintenance and repairs.
Source: Concrete Construction Products