Can building thermal insulation materials be attached to the inner layer?

This question cannot be answered in general. External wall insulation is mainly divided into external wall insulation, internal wall insulation and internal and external composite insulation. Of course, the most important way is self-insulation of the wall, which is also the general direction of external wall insulation in the future. The biggest advantage of external wall insulation is that it can protect the main structure well, and there is no problem of cold and hot bridge. Of course, internal insulation is also a very good insulation system, but it depends on what kind of area it is used in. For example, in the northern region, if internal insulation is used, the problems caused by cold and hot bridges will be more prominent. The southern region is dominated by heat preservation, which is meaningless in theory. Therefore, as long as the cold and hot bridges such as beams and columns are properly handled during construction, they will never be worse than external insulation in some aspects. As for the problem that "all the insulation materials I bought are stuck on the inner layer, and the decoration needs to be knocked off", I guess that the possible rubber powder polystyrene particle insulation material is just a simple insulation material made of ordinary white foam particles and cement, because the bonding strength with the base layer is only 50kpa, and the compressive strength is only 200kpa, even if the crack-resistant protective layer is well made, it can not fully meet the needs of indoor secondary decoration. This situation you are talking about is by no means an example, but. The reason is that many developers have to consider the cost on the one hand, and put on airs to deal with energy-saving acceptance on the other. It wastes people and money, but it doesn't get the favor of the owners. Energy saving is beyond recognition! As for plastic sheets (EPS, XPS), most of them are organic materials. Last year's Lantern Festival fire in the North Annex of CCTV taught us a good lesson-energy saving is important, and safety is more important. Of course, we don't mean that this material is not good, but it depends on where it is used. For example, most of the common foundation (below plus or minus zero) walls on the construction site are extruded foam boards (XPS), which are much better than similar materials in terms of cost, thermal insulation, waterproof and impact resistance. It is precisely because of this knowledge that there are no thermal insulation construction projects yet, and most of them have replaced the external wall thermal insulation materials with inorganic thermal insulation materials. This is because compared with other thermal insulation materials, this kind of material has the advantages of inorganic incombustibility, high compressive strength, convenient construction, the same life as the building and appropriate cost. Hangzhou Shuangyu Building Materials, Song: zhanquan-s@ 163.com