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The construction of exterior wall insulation materials requires anti-cracking mortar. After 3-7 days of layered construction, before the anti-cracking layer is constructed, ensure that the construction quality of the layer is qualified. The length of the alkali-resistant mesh shall not exceed 3 meters, and the mesh size shall be cut in advance. The edge of the mesh cloth shall be cut off. When using anti-cracking mortar, the thickness shall be controlled at 3-4 mm. After wiping the anti-cracking mortar with the same width and the same length of the anti-cracking mortar, the alkali-resistant mesh cloth should be pressed from left to right and from top to bottom with an iron sheet. Windows, openings, etc. should be laid in a 45-degree direction. Add mesh cloth (400mmx300mm) in advance. The overlapping width of the alkali-resistant mesh should not be less than 50 mm. Dry overlap is strictly prohibited. The alkali-resistant mesh at the intersection of the negative joint overlaps with the pressure, the compression width is greater than 50mm, and the cross width is greater than 200mm. The alkali-resistant mesh cloth should be flat and wrinkle-free, and the mortar fullness can reach 100%. At the same time, it should be flattened and straightened to maintain the verticality and verticality of the yin and yang angles.

The bottom of a wall should be covered with a double layer of alkali-resistant mesh. The first layer is covered with mesh cloth. The butt joint method should be adopted between the mesh and the mesh. It is forbidden to dock the mesh at the yin and yang corners. The distance between the butt joint and the yin and yang corners should not be less than 200mm. Then lay the second layer of mesh. As mentioned above, the anti-cracking mortar between the two layers of mesh should be full, and dry paste is strictly prohibited. The external insulation layer at the bottom of the building should be set with a special metal corner between the two layers of mesh at the male corner. The height of the corner guard is generally 2 meters. After laying the first layer of mesh, the metal corner is in place. Spray cracking mortar with plaster at the corner hole, and wrap the anti-cracking mortar in the corner. Make sure the protective cover is firmly installed.

After the surface is covered with anti-cracking mortar, it is strictly forbidden to use ordinary cement mortar waistline, mouth sleeve to wipe the surface of the external wall insulation material, and scrape off non-flexible materials such as rigid putty. It is suitable for thermal insulation or energy-saving renovation of compact new or existing building exterior walls (such as concrete or brick walls). The structure of exterior wall insulation materials is mainly composed of bonding layer, insulation layer, plaster layer, decorative layer and accessories, and rock wool board insulation structure.

There are many kinds of exterior wall insulation materials, such as foamed polystyrene board thin plaster exterior wall insulation system, rubber powder polystyrene particle insulation slurry exterior wall insulation system, spray rigid foam polyurethane exterior wall insulation system, and decoration and integration of exterior wall insulation system.