Heat preservation and waterproof structure for house building engineering

The utility model discloses a house building engineering heat preservation and waterproof structure, and relates to the technical field of house building engineering equipment, the house building engineering heat preservation and waterproof structure comprises a top plate, the top of the top plate is fixedly connected with a water collecting bin, rotating shafts are fixedly installed on the two sides of the top of the water collecting bin, and the outer walls of the rotating shafts are rotatably connected with dustproof nets; a drainage plate is movably clamped to the inner wall of the top plate, a supporting frame is fixedly connected to the bottom of the top plate, a first motor is fixedly installed on the top of the supporting frame, a lead screw is fixedly connected to an output shaft of the first motor through a coupler, a sliding table is in threaded connection with the outer wall of the lead screw, and a connecting rod is fixedly connected to the outer wall of the sliding table; one end of the connecti