External wall insulation price per square meter external wall insulation construction scheme

Nowadays, many friends attach great importance to the external wall insulation when decorating, and there are many ways of external wall insulation, but the general external wall insulation methods are composed of polymer mortar, glass fiber grid cloth, flame-retardant molded polystyrene foam board and extruded board (XPS). At present, the new type of external wall thermal insulation integrates the functions of thermal insulation, waterproof and facing together through the assembly line. Therefore, the effect and performance of the new external wall insulation method are very strong. Then let's tell you about the knowledge of external wall insulation.

How much is the external wall insulation per square meter?

Generally, it is 60- 120 yuan/square meter. What is the insulation layer made of? If the insulation material requires good insulation and high fire resistance, the price will be expensive. In addition, the thickness of insulation materials in different regions is different, and the price is also different. Generally, the better materials in East China are 100 block/square meter or more. The price source network is for reference only.

Construction scheme of external wall insulation

1. Grassroots cleaning. Clean up the residual floating ash, release agent oil stain and other sundries and plastering empty drum parts on the concrete wall surface, and repair them. All kinds of holes in the outer wall are densely filled. It is required that the deviation of the surface flatness of the pasted polystyrene board should not exceed 4 mm. If the deviation exceeds 4 mm, the protruding wall should be polished and smooth, and the concave part should be filled.

2. Wall measurement, elastic line, hanging line. According to the technical requirements of building facade design and external wall insulation, horizontal and vertical control lines, expansion lines and decorative seams of external doors and windows pop up on the wall. Hang vertical datum lines at the big corners of the external walls of buildings and other necessary places, and hang horizontal lines at appropriate positions on each floor to control the verticality and flatness of polystyrene boards.

3. Paste the flip grid cloth. Where the pasted polystyrene board is exposed, the grid cloth should be turned over. Use a special bonding mortar to firmly stick the grid cloth with a width of 80mm not less than 200mm on the base surface, and turn the remaining grid cloth upside down when sticking the polystyrene board at the back.

4. Paste polystyrene board. The standard dimensions of external thermal insulation polystyrene boards are 600mm×900mm and 600 mm× 1200 mm. For places with nonstandard dimensions or local irregularities, polystyrene boards with minimum dimensions exceeding 300mm can be cut at the corners of the whole wall, and flat-fell seams of polystyrene boards are not allowed at the four corners of doors and windows. Because the surface roughness of the wall base is not good enough, the point-frame bonding method should be adopted, and the bonding area should not be less than 40% when the decorative surface is paint. Do not apply bonding mortar to the side of the board. When the plates are arranged, they shall be arranged in horizontal order and pasted by staggered joints. Angle of Yin and Yang should be staggered stubble treatment. When sticking the board, even if the bonding mortar overflowing from the board edge is clear, there is no "concave-convex ash" between the boards. The joint of the board should be closely stitched. When the joint width exceeds 2mm, it should be filled with polystyrene board with corresponding thickness. Flat-fell seam height difference is not greater than 65438+/-0.5 mm, otherwise it should be polished with sandpaper or special grinder first.

5. The anchor is fixed. When the mechanical anchor is used to fix the polystyrene board, the installation of the anchor should be carried out at least 24 hours after it is used in bonding mortar, and the surface of the polystyrene board should be punched inward with an electric hammer. The aperture depends on the diameter of the anchor rod, and the depth into the wall should not be less than the design requirements. Screw in or knock in the anchor nail, and the nail head and disc shall not exceed the board surface.

6. When the joint surface of polystyrene board is uneven, coarse sandpaper lined with wood square should be used as the base. The requirements of grinding action are: gently rotate along the circumferential direction, and after grinding, use a brush to remove foam debris on the surface of polystyrene board.

7. Wipe the bottom plastering mortar. After the construction of polystyrene board pasting and anchoring pieces is completed and accepted, polymer mortar plastering shall be carried out, the bottom plastering mortar shall be painted on the surface of polystyrene board, and the folded grid cloth shall be pressed into the mortar. Then press the steel grid cloth used in the four corners of doors and windows and the yin and yang corners into the mortar.

8. lay a grid cloth. Tighten the grid cloth and stick it on the bottom plastering mortar. Press the grid cloth into the mortar surface from the middle to all sides with a trowel. Should be flat and dense, it is forbidden to wrinkle the grid cloth. The grid cloth should not be pressed too deep. When overlapping, laying must meet the requirements of horizontal direction 100mm and vertical direction 80 mm. Before the bottom mortar solidifies, plastering mortar should be done to cover only the grid cloth and see the outline of the grid cloth. Don't keep rubbing the surface mortar to avoid hollowing out.

That's what we told you about external wall insulation. I think after reading the article we shared, you should have a very good understanding of the method of external wall insulation. External wall insulation is still a bit high on construction requirements, and the general construction conditions are about 5 to 30 degrees. Moreover, there are many external wall insulation materials, such as phenolic resin composite board organic materials, polyurethane foam materials, rubber powder polystyrene particle insulation slurry, expanded polystyrene board (EPS board) organic materials, ceramic insulation board inorganic materials and so on. When buying, you can buy according to your actual situation.

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