The advantages of metal external wall thermal insulation decorative panel technology Compared with internal thermal insulation of external walls, external thermal insulation of external walls has the following advantages.

1. Improve the service life of the main structure and reduce long-term maintenance costs. Using external thermal insulation technology, since the thermal insulation layer is placed on the outside of the building envelope, the stress caused by the structural deformation caused by the temperature change is buffered, and the structural damage caused by the rain, snow, freezing, thawing, drying and wet cycles is avoided, and the Erosion of the building envelope by harmful gases and ultraviolet rays in the air. Therefore, as long as the wall and roof thermal insulation materials are properly selected and the thickness is reasonable, the external thermal insulation can prevent and reduce the temperature deformation of the wall and roof, and the common oblique cracks or splay cracks.

2. Reduce the construction cost and increase the usable area of the house. Since the external thermal insulation technology thermal insulation material is attached to the outside of the wall, its thermal insulation and thermal insulation effect is better than that of internal thermal insulation, so the main structure wall can be thinned, thereby increasing the usable area of each household.

At the same time, the lightening of the wall can reduce the diameter of building beams and columns and the amount of steel bars, further reducing the cost. According to estimates, in a tower-shaped building, the average usable area of each household can be increased by 1.3 square meters to 1.8 square meters, and the sales area is calculated according to the building area. Basically offset the cost of external insulation.

3. The effect of the basic "thermal bridge". "Thermal bridge" refers to the main channel for heat dissipation at the junction of inner and outer walls, structural columns, frame beams, door and window holes, etc. For internal thermal insulation, "thermal bridge" is unavoidable, and external thermal insulation can not only prevent condensation from occurring in the "thermal bridge" part, but also reduce the heat loss caused by the "thermal bridge". Heat losses are reduced, and expenditures per heating season naturally come down.

4. Thermal performance of the wall. When external thermal insulation is used, since the main structural material with high vapor permeability is located inside the thermal insulation layer, as long as the thermal insulation material is properly selected, condensation generally does not occur inside the wall, so there is no need to set up a gas barrier. At the same time, because the structure layer with large heat storage capacity is on the inside of the wall, when the room is subjected to unstable heat, the indoor air temperature rises or falls, and the wall structure layer can attract or release heat, so it is conducive to maintaining room temperature. Stablize.

5. It is convenient to renovate the building. In interior decoration, the inner insulation layer is easily damaged, and the outer insulation can avoid this problem. In the energy-saving renovation of old buildings, the major advantage of using metal external thermal insulation decorative panels is that there is no need to temporarily move, and it basically does not affect the normal life of users.