Exterior wall insulation is an advanced technology of exterior wall energy conservation.The lightweight and efficient insulation materials are expanded polystyrene, extruded polystyrene, rock wool, glass wool and so on.However, the external insulation system is located on the surface of the building, directly facing the outdoor atmosphere.When used in high-rise buildings, the following problems should be paid attention to:

First, the system and the base wall should be fixed reliably: high-rise buildings bear large wind load, and the wall part will produce a large negative wind pressure.Therefore, the insulation layer should have a reliable bond with the base, the use of insulation board, there should be mechanical anchorage of the auxiliary measures.

Second, the system's fire performance should comply with the relevant national laws and regulations: now used for high-rise building insulation materials more flame retardant polyphenylene board, this kind of material has flammability, used for high-rise building exterior wall should take fire prevention structural measures, such as setting fire isolation belt.

Third, the exterior coating should be used: the insulation layer in the system is mostly light porous material, the shear strength is low, so the surface layer should not be used brick.If the adhesive brick must have reliable measures, in order to prevent the brick off injury.

Fourth, the durability of the system should meet the requirements: under normal use and maintenance conditions, the service life of the external wall insulation project should not be less than 25 years.

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