The secondary renovation of a house involves directly applying paint to the integrated insulation and decoration surface layer. The paint comes into direct contact with the outside world and is easily contaminated by stains and dust. Acid and alkali can penetrate and corrode the surface layer with moisture, resulting in poor weather resistance and color retention. When the joint width of the board seam exceeds 2mm, polystyrene sheets of corresponding thickness should be filled. The height difference of the docking should not exceed 1.5mm, otherwise it should be polished with sandpaper or a special grinder. The depth of penetration into the wall should not be lower than the design requirements, and the nail head and disc should not exceed the surface of the steel plate.

The secondary renovation project of the house includes external wall insulation, exterior facade painting, roof insulation, waterproofing, and replacement of external wall rainwater pipes, achieving both insulation and moisture resistance. External wall insulation and decoration integrated panel is a popular type in the building external wall industry in recent years. External wall insulation and decoration integrated panel connects functions and materials together. But many people may not have much exposure to this aspect.

The integration of insulation and decoration adopts this process, which requires changing the specifications of the brick masonry. Otherwise, how to make it look like a flower? In fact, this consideration is usually used for cost in projects, thinking that using insulation materials for the entire wall is too expensive, so it is optimized to be like this. Its thermal insulation performance can last for 20-50 years or longer. The closed cell structure of excellent corrosion resistant polyurethane rigid foam and the surface materials used make it have excellent air and water resistance.

The cracking in the secondary renovation of the house is mainly caused by factors such as internal stress, shrinkage rate, and physical properties between the integration of insulation decoration and insulation materials. Once the insulation layer and protective layer crack, it will cause large-scale water seepage in the wall, and its insulation performance will undergo significant changes, which cannot meet the requirements of energy-saving design. The integrated structure of insulation and decoration is stable, and even after years of use, its insulation performance will not deteriorate, making it the choice for building insulation materials. In addition, foam board has hardness and flexibility, so it has good compression and impact resistance, and is not easy to crack and deform.