How should stone paint on an old wall construction?

Old metope is commonly cement surface, the paint, terrazzo, brick wall surface, etc. Construction of the main difficulties and focus on basic processing, processing at the grass-roots level directly affect the construction of stone coating effect and decorative effect. In actual construction, should according to the different treatment scheme of different base material design and construction process. Main construction procedure is as follows: 01 upward sloping wall if metope have loose and protruding parts, must be thoroughly cleared. If the old coating due to shatter and fall off and not waterproof, high pressure water to rinse the old coating should be used. With the wall of the oil pollution and dust should use cleaner or lye. 02 clean walls clean with clear water clean metope, ensure metope without oil, dust and other impurities. 03 walls for local repair damaged parts. Response after repair the walls of the necessary maintenance. If metope ceramic tile, must be in ceramic tile surface coating a layer of interface agent or batch of ceramic tile, to renovate putty powder, and then use the external wall putty powder leveling. 04 stone coating construction in order to enhance the adhesion of coating, old walls must be coated with seal primer. Seal primer is completely dry, according to the stone coating construction technology for the next coating construction.