屋面防水层的细石混凝土保护层是屋面防水工程的重要分项工程,对屋面防水层进行保护,保护防水层免遭机械损坏和减少自然环境对防水层的侵蚀等。它是屋面防水工程中唯一可直接目测检查的项目,所以其施工质量会影响工程能否顺利通过竣工验收,特别是对创建精品工程、品牌工程的验收与核验。目前屋面混凝土保护层施工中存在的质量通病主要有:防护层开裂;表面起砂、起皮;局部塌落、平整度差;分格条不顺 Roofing waterproof layer of fine stone concrete cover is an important part of roof waterproofing project, the roof waterproof layer protection, waterproof layer to protect from mechanical damage and reduce the natural environment of the waterproof layer of erosion. It is the only item in roofing waterproofing project that can be directly visual inspection. Therefore, the quality of its construction will affect whether the project can pass the final inspection and acceptance, especially for the acceptance and verification of creating quality projects and brand projects. At present, there are common quality defects in the construction of concrete roof protection layer: cracking of the protective layer; surface sand and peeling; local collapse, poor flatness;