Due to different construction techniques, the external insulation materials of the building may have closed and non closed cavities in the external insulation system. The existence of non closed cavity structures may provide sufficient oxygen for the combustion of insulation materials in the system, which can cause a "chimney effect" after a fire. The repair work of the foundation is to observe the flatness of the exterior wall before the formal construction begins. In some uneven areas, filling or scraping schemes need to be adopted for treatment. If there are obvious grooves on the uneven wall, cement mortar can be used.

External wall insulation material is an insulation structure set on the outer surface of the external wall, consisting of a bonding layer, insulation layer, protective layer, and decorative layer. Traditional exterior wall insulation structures often use insulation boards and mortar as insulation layers. Suitable for energy-saving decoration and renovation of existing buildings, as well as indoor and outdoor decoration.

At the same time, the installation method of the integrated board is simple and practical, not limited by weather or seasonal environment, so the installation and use are very safe and convenient, suitable for all seasons. The quality of these raw materials for foaming is basically indistinguishable in appearance, so be careful when choosing. This ensures quality at the root and provides comprehensive after-sales service, allowing for the optimal performance of polyurethane insulation boards.

The moisture-proof performance of extruded polystyrene board for exterior wall insulation is very good. Even in low temperature environments, there will be no water leakage or freezing. Moreover, the quality of extruded polystyrene board is also very light, which can increase the convenience of construction. The construction and renovation project of external wall insulation materials should pay attention to controlling the thickness. If the plaster layer can cover the mesh cloth perfectly, it indicates that the thickness is appropriate, generally around 1mm.