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The residential areas that use the construction method of external wall insulation materials plus paint all have the problem of falling off, and the facade is very ugly, with a corner missing in the east and a piece missing in the west. Cracking is also a relatively serious problem, mostly caused by the unqualified quality of external wall insulation materials and finishing layers. The external wall insulation construction process adopts the point frame method + anchor bolt, and the effective anchoring depth of the anchor bolt should be no less than 35mm. The external wall paint uses real stone paint, which should meet the requirements of 10 years of material without fading, powdering, and peeling.

The surface flatness deviation of the external wall insulation material shall not exceed 4mm. When the deviation is exceeded, the protruding wall surface shall be polished and the concave surface shall be filled. According to the technical requirements of the building facade design and external wall insulation, the horizontal and vertical control lines, expansion lines and decorative nail lines of external doors and windows are popped out on the wall. When constructing on rainy days, effective rain protection measures should be taken to prevent the wall that has just been completed but the bonding mortar or surface polymer mortar has not yet set from being washed by rainwater. If the glue is uneven and unevenly distributed, it will lead to improper pasting and hollowing.

When the exterior wall insulation material is constructed by the sticking method, in order to ensure the verticality of the external angle, the XPS board should be placed at an appropriate distance from the wall during construction. After all the extruded boards are pasted, they should be cut after uniformly marking the lines, and then polished flat. When waterproofing the roof, no matter what process method or material is used, the extruded board has a good matching effect during construction. At the same time, before preparing to lay it, it is necessary to determine whether the waterproof layer has been cured, so as to prevent the problem of the exterior wall insulation material falling off.