EPDM membranes are airtight and waterproof, and additionally, it is a light weight material that is easy to install. Using a special contact adhesive or a sealer, EPDM can be adhered to almost any substrate, including gutters. With all of its advantageous properties, EPDM is an ideal lining for gutters. It protects the gutter against moisture and other elements, consequently extending the lifespan of the gutter. Furthermore, the moisture-repellent qualities of EPDM can be used, for example, to protect zinc gutters against condensation. This is especially important for roof valleys – the joint between two inclined sides of a roof – and for gutters that are partially installed against a wall. Fully wrapping the gutter with EPDM membranes prevents condensation from infiltrating the wall.