Proper cleaning instead of expensive and time-consuming renovation - that was the result of the test cleaning. In this case, the black mastic asphalt floor in a production hall of a company in Kitzingen was no longer properly clean, even with normal basic cleaning, due to the build-up of dirt. Our AWT expert first removed old care film residues by basic cleaning with Perfekt G 440. After the drying time, the flooring was coated with the polymer dispersion Corridor Black S 739 and finally the polymer dispersion Corridor Glorin S 734 was applied as a sacrificial layer to prevent colour changes or fading of the dispersion. The result speaks for itself and the customer is spared a cost-intensive floor renovation.