When the second coat has dried the surface is ready for screeding, floor-covering, painting, etc. Creom treated surfaces which are not covered by any material must not be exposed to high pressure hosing until a week after treatment to guarantee hardening.     The application of Creom to a sub-floor renders that sub-floor impervious. It is important, therefore, for contractors to take this into account when choosing to fix floor coverings direct to Creom treated floors. Experience has shown that when fixing direct to Creom, Pressure Sensitive adhesives are the preferred method; however, Adhesive Manufacturers’ guidelines must be followed. Where an adhesive requires a porous background a suitable smoothing underlayment should be laid over the Creom treated sub-floor. Many adhesive manufacturers state in their technical data sheets that, where the sub-floor is impervious, a suitable latex must be laid over the sub-floor prior to application of water-based adhesives. Creom UK would not give contrary advice to this procedure. However, if the contractor wishes to use a pressure-sensitive adhesive which is suitable for direct application to impervious surfaces, then this should be quite acceptable, providing at all times the contractor follows closely the manufacturer's application instructions. If you require any further information please contact Creom Technical Services.