1. Grassroots interface treatment: The wall surface should be cleaned up, oil stains, and floating dust should be cleaned. The loose and weathered parts of the wall should be removed. Protrusions on the wall surface greater than 10mm should be removed. In order to make the interface adhesion of the base layer uniform and homogeneous, the wall should be treated with the interface, and the interface mortar can be evenly coated with spray or roller brush to ensure that all the walls are treated with the interface. The brick walls and aerated concrete walls should be wetted with water before the interface treatment. When plugging the hands, eyes and abandoned holes, the debris and dust in the holes should be cleaned up, watered and moistened, and then 1:3 cement Mortar fills it up and builds it tightly.

2. Hanging vertical and elastic control line: the method of laying out the line is determined according to the height of the building, using the large corner of the wall and the two sides of the door and window, use theodolite to hit the straight line to find the vertical, stretch the low-carbon steel wire to find the rules, and the horizontal horizontal line can be 500mm up according to the floor elevation. Intersection control for the horizontal reference line. According to the vertical line and the insulation thickness, the control line is bounced on both sides of the big corner of each step frame, and then the horizontal pass line is pulled to make the mark block.

3. Install rock wool board: (frame bonding method, expansion bolt anchoring)

4. Construction of the interface layer: Place the plastic gasket under the steel wire mesh, and lift the steel wire mesh by 5mm.