In the presence of moisture, the active chemically in Estokote Crystalline penetrate concrete and react chemically with free lime to produce insoluble crystals. This crystalline growth reduces porosity by blocking capillaries and filling hairline non-structural cracks (up to 0.5 mm wide) caused by shrinkage or expansion.
Unlike coating and membrane types of waterproofing, which only form a surface barrier. Estokote Crystalline, in the presence of water, continues producing crystals and a lasting imperviousness to water.