New concrete surfaces or dusty surfaces with low adhesion must be primed with polyurethane-based CLASS PUX-510 prior to application. The curing time for the primed surface is 24 hours. The material, mixed and homogenized using a low-speed mixer or drill, is applied to the primed surfaces with a fine notched trowel, flat trowel, short-pile roller, brush, or suitable spraying equipment. Application should be carried out in at least two, preferably three coats. Before applying the second coat, an intercoat waiting time of approximately 8 hours should be observed, depending on ambient temperature. In extremely hot weather, this waiting time may be shorter, whereas in extremely cold weather, it may be extended. If ceramic tiling is to be applied subsequently, a thin coat of CLASS PUX-750 should be applied after the final cure is complete, and dry, sieved sand should be broadcast while the coat is still fresh and wet.