防水卷材是指将沥青类或高分子类防水材料浸渍在胎体上，制作成的防水材料产品，以卷材形式提供，称为防水卷材。防水卷材主要是用于建筑墙体、屋面、以及隧道、公路、垃圾填埋场等处，起到抵御外界雨水、地下水渗漏的一种可卷曲成卷状的柔性建材产品，作为工程基础与建筑物之间无渗漏连接，是整个工程防水的第一道屏障，对整个工程起着至关重要的作用。产品主要有沥青防水卷材和高分子防水卷材。
Waterproof roll refers to the product of waterproof material made by impregnating asphalt or polymer waterproof material on the carcass and providing in the form of roll, which is called waterproof roll. Waterproof coiled material is mainly used in building walls, roofs, tunnels, highways, landfills and other places, which plays a role in resisting the leakage of external rainwater and groundwater. As the first barrier between the engineering foundation and the building, it plays an important role in the whole project. The main products are asphalt waterproof roll and polymer waterproof roll.