Analysis on the Application of External Wall Insulation Technology in Different Climate Environment

External wall insulation technology has been applied in foreign countries for a long time, and has withstood the test of various climatic environments. There are still some differences in the application of technology under different climatic conditions, such as cold regions and severe cold regions. We will introduce them below. It is also the application of external wall insulation technology in these two climatic environments.

The external wall thermal insulation system is divided into a composite external wall thermal insulation system and a single-material external wall thermal insulation system from the composition of the wall. The composite external wall thermal insulation system is composed of a base layer, a bonding (anchor) layer, a thermal insulation layer, a protective layer and a decorative layer. In terms of structure, there are internal thermal insulation, external thermal insulation and sandwich wall thermal insulation systems. These external wall thermal insulation systems have been or are being used in engineering in cold and severe cold areas.

The climatic characteristics of cold and severe cold areas are cold in winter (average temperature of cold month is 0～-10℃ and <-10℃), the building envelope can withstand low temperature and wind and snow, and the summer is hot, and the building envelope can withstand high temperature. And solar radiation and rain. The design standards for building energy efficiency also require higher external wall thermal insulation performance than other regions. Therefore, the external wall thermal insulation system requires long-term resistance to changes in the external natural environment temperature and humidity, under the action of solar radiation, rain, snow, and wind. The performance of each layer of the system is stable and will not cause any damage or loss of function. The materials of each layer have their own performance requirements according to their functions, but they are influential and related to each other.