建筑材料湿度对其保温隔热性能以及结构性能(包括耐久性)有极大影响,例如北方地区复合外墙板用加气混凝土或水泥珍珠岩做夹芯材料,由于预制中受潮,其保温效果成倍降低;轻骨料混凝土做外墙的重量湿度在房屋建成的头几年内有不少建筑仍高达10％以上,因而也极大地影响了其保温性能。由于保温材料湿度大,保温效能降低,造成外墙内表面结露现象相当普遍,同时,在冬季条件下,由于温差 Humidity of building materials has a great influence on its thermal insulation performance and structural performance (including durability). For example, in the northern area, composite outer wall panels use air-entrained concrete or cement perlite as the sandwich material, and their thermal insulation effect is due to moisture in the prefabrication. Multiplied; the weight and humidity of the lightweight aggregate concrete as the external wall in the first few years of construction of the house is still more than 10% of the building, which also greatly affect the insulation performance. Due to the high humidity of the insulation material, the heat insulation performance is reduced, resulting in the phenomenon of condensation on the inner surface of the outer wall is quite common, and at the same time, due to the temperature difference in winter conditions.