近两年来，我站核验的竣工工程中，半数以上都存在着不同程度的外墙渗水现象。外墙渗水严重影响了室内装饰效果，使粉刷层变色、发霉，甚至脱落。而且由于墙体长期处于潮湿状态，降低了建筑物的安全性和耐久性。造成外墙渗水的原因是多方面的，与建筑设计、建筑材料及施工质量 In the past two years, more than half of the completed projects that have been verified by our station have had different degrees of external wall seepage. The seepage of the exterior wall has seriously affected the interior decoration effect, making the stucco layer discolor, moldy, and even fall off. Moreover, due to the long-term wet conditions of the wall, the safety and durability of the building are reduced. The causes of water seepage in the external walls are various and related to architectural design, construction materials and construction quality.