A waterproof membrane is a barrier designed to prevent water from penetrating a surface. It is commonly used in construction to protect buildings, roofs, and foundations from moisture damage. These membranes can be made from various materials, including rubber, plastic, or bitumen, and are often applied in layers to ensure complete coverage. In addition to construction, waterproof membranes are also used in other applications, such as in swimming pools and landscaping. They help manage water flow and protect structures from water-related issues, ensuring longevity and durability in various environments.