When we are building a house, in addition to the interior decoration of the building, the insulation of the external walls is also very important. Only qualified external wall insulation system, the house can be warm in winter and cool in summer, so that living comfortable and pleasant.

　　Commonly used external wall insulation materials are polystyrene foam board (EPS), extruded polystyrene foam board (XPS), rock wool board, glass wool board, expanded perlite board, etc. These insulation materials have advantages and disadvantages, such as polystyrene foam board insulation performance is good, but flammable; Rock wool board is not flammable, but larger water absorption. The selection of specific thermal insulation materials needs to be comprehensively considered according to the construction requirements, environmental protection requirements, quality requirements and other factors.

　　External wall insulation is very important in the field of construction, the main role is:

　　Good external wall insulation system can effectively reduce the temperature difference between indoor and outdoor, reduce heat loss, thus reducing the energy consumption of heating and cooling, improve energy efficiency, to achieve the purpose of energy saving, emission reduction, environmental protection. External wall insulation layer can effectively reduce the temperature difference between indoor and outdoor, improve indoor comfort, but also play the role of moisture-proof, mildew proof, fire prevention, sound insulation and so on. In addition, appropriate external wall insulation can also improve the appearance of the building, enhance the building's wind resistance, seismic performance, protect the building structure from the erosion of the natural environment, prolong the life cycle of the building.

　　In short, external wall thermal insulation materials play a very important role in improving the energy saving performance of buildings, protecting the building structure and environment, and improving the building quality.