NEGATIVE WATERPROOFING 2K: is a slurry reacts with concrete by way of crystallisation in order to generate a two-component, durable and flexible membrane which will be used for filling any cracks, ensuring resistance to hydrostatic pressure and being used at saturated areas. The unique and very efficient components of the product react with free water, moisture and lime in the pores and veined areas on the concrete in order to form insoluble crystal complexes preventing water penetration. These crystals remain in the veins and thus, they ensure water tightness. The binding agent of the product “second component” is used in substitution for water in order to enhance the efficiency of the mixture, ensure perfect adhesion to the surface, maximize flexibility and prevent shrinkage.