外墙防水是保证建筑物(构筑物)的结构不受水的侵袭、内部空间不受水的危害的一项分部防水工程。外墙防水工程在整个建筑工程中占有重要的地位。
External wall waterproofing is a divisional waterproofing project to ensure that the structure of buildings (structures) is not affected by water and the internal space is not damaged by water. The external wall waterproof engineering plays an important role in the whole construction project.
外墙防水工程涉及到建筑物(构筑物)的地下室外墙、住房外墙等诸多外墙结构，其功能就是要使建筑物或构筑物在设计耐久年限内，防止雨水、生活用水的渗漏和地下水的浸蚀，确保建筑结构、内部夺间不受到污损，为人们提供一个舒适和安全的生活环境。
The outer wall waterproof project involves many outer wall structures such as basement outer wall and housing outer wall of the building (structure). Its function is to prevent the leakage of rainwater and domestic water and the erosion of groundwater within the design durability period of the building or structure, to ensure that the building structure and internal space are not polluted, and to provide a comfortable and safe living environment for people.
外墙防水工程是一个大系统的防水工程，它涉及到材料、设计、施工、管理等各个方面，外墙防水工程的任务就是综合上述诸方面的因素，进行全方位的评价，选抖符合质量标准 的防水材料，进行科学、合理、经济的设计，精心组织技术力量进行施工完善维修、保养管理制度，以满足建筑物(构筑物)的防水耐用年限和使用功能。
The external wall waterproofing project is a large system waterproofing project, which involves materials, design, construction, management and other aspects. The task of the external wall waterproofing project is to comprehensively evaluate the above factors, and select and shake them to meet the quality standards The waterproof materials shall be designed scientifically, reasonably and economically, and the technical force shall be carefully organized to carry out construction and improve the maintenance management system, so as to meet the waterproof service life and use function of buildings (structures).