在建筑物的外门、外窗框与墙体接触的周围,由于在安装及抹灰嵌填施工时,密封处理不好,加之在使用过程中,门窗的开与关对门窗框与墙体的震动,使得门窗框边嵌缝出现裂缝,甚至出现灰浆脱落。下大雨时,雨水沿着门窗框与墙体间的缝隙渗入墙体和室内。因此,室内可以见到门窗框周围的墙体出现大片的湿痕,严重时可沿墙面滴水,引 When the outer door and outer window frame of the building are in contact with the wall, sealing and handling are not good during the installation and plastering. In addition, the opening and closing of the door and window of the door and window frame and the wall during the use process. The vibrations caused cracks in the joints between the door and window frames, and even mortar peeling occurred. During heavy rain, rain seeps into walls and rooms along the gap between the door frame and the wall. Therefore, indoor walls can see a large number of wet marks around the wall of windows and doors.