Construction method for building waterproof heat preservation coating

The invention discloses a construction method for a building waterproof heat preservation coating, and relates to the technical field of building construction equipment, and the construction method comprises the following steps: base layer treatment, cleaning and polishing, water removal treatment and coating. The high-frequency coating mechanism and the avoiding stacking eliminating mechanism are arranged on the pull-back trolley, the material coating effect of an indoor floor floor ground coating can be guaranteed during construction in the low-temperature environment, the side end face of a swinging leveling piece repeatedly scrapes and flattens the coating at the internal corner, and therefore the sagging phenomenon is eliminated; the two split coating plates are arranged in the avoiding stacking eliminating mechanism, the slope guiding side ends control the passing path of the device at the reserved pipe root, after the reserved pipe root completely avoids and passes, the coating plates are driven to res