Water bag sand, water bag how colorful coating in the 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 colored 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: ▍ underlying process: first, with updates on the surface of the ceramic tile of old ceramic tile of smooth roll coating interfacial agent, the interface agent can rapidly infiltrate the ceramic tile, in formation on the surface of the ceramic tile has a certain tolerance of rough interface, improve the bonding strength between the coating and bottom putty, etc. ( Ceramic tile surface rolling before renovation interface treatment agent, wash clean float ash on the surface of the ceramic tile with high pressure water and the oil; Empty drum, layering, damaged parts should be clear, such as using cement mortar smoothly) Phi 13 putty leveling: scrape on rough thick coating interfacial agent special exterior wall putty leveling. Here what should remind is, must use special exterior wall putty. Outdoor wind environment, day, rain, high temperature baking and low temperature freezing and thawing of the metope adornment layer, crack resistance, water resistance, alkali resistance, mildew resistance and weatherability putty is much higher than the interior decoration. ▍ seal primer: in order to improve the adhesion of coating, old walls must be coated with seal primer, after being completely dry seal primer, coating color stone coating. ▍ : color stone painting color, neutral color painting after drying with special spray gun evenly colored stone paint 1 - 2 times, 12 hours ( 23±2℃) , 24 hours after spraying dry, 1 - spray gun evenly spray paint 2 times, each time interval of 4 - 6 hours. After the completion of the primer, don't forget to separate walls, in order to improve the effect. Refer to external wall dry hanging stone style, eaves line and Windows should be separate, line should be turned to the inside window frame. If the floor is very short, every bolt should use 0. 8 - 1. The partition of 8 cm.