overhead caulking

例句：

1. 1. The waterproofing material used for the roof is an important part of the building's structural integrity.
   用于屋顶的防水材料是建筑结构完整性的重要组成部分。
2. 2.The contractor applied a layer of overhead caulking to ensure a watertight seal around the chimney.
   承包商在烟囱周围涂上了一层屋顶密封胶，以确保防水。
3. 3. Before painting the walls, it is essential to remove any existing overhead caulking and clean the surface thoroughly.
   在粉刷墙壁之前，必须清除任何现有的屋顶密封胶并彻底清洁表面。