How to handle concrete floor? We conducted a test at the service station, where untreated concrete was operated for 9 years. The coating had serious damage and cracks, because the floor was collapsing dust. After 2-fold application of hardening impregnation for concrete, the floor stopped absorbing liquids, stopped dusting and became much stronger. Impregnation is a hypoallergenic material. The resulting coating has antiseptic properties, does not burn and does not change the color of the concrete.