Why should external wall insulation be carried out? Mainly in order to reduce the building indoor and outdoor temperature difference, save energy, reduce the degree of environmental pollution, to ensure the stability of indoor temperature. In addition, the insulation of the external wall of the building can effectively prevent the transmission of sound waves and affect the appearance of the wall.

　　General external wall insulation materials are: glass wool, polystyrene (EPS), polyurethane, slag wool, foam concrete (PVC), diatomite and so on. Glass wool has good thermal insulation performance, strong water resistance, can effectively prevent heat conduction, effectively maintain indoor temperature, but also has high sound insulation, heat insulation and other functions.

　　Glass wool is a commonly used building external wall insulation material, with good thermal insulation and sound insulation performance, can effectively prevent heat conduction, maintain indoor temperature, but also has good water resistance. The material used is sealed air, coated with paper, heat preservation, waterproof, increase durability. In addition, glass wool is simple to use, does not need special tools, electrical professionals can also easily operate, has the advantages of light weight, flame retardant, durability, is currently more effective to prevent indoor air pollution, disperse formaldehyde and ammonia and other harmful substances, one of the building external wall insulation materials, can make the air clean and fresh, create a comfortable home living environment.