HydroShell SA is a pre-fabricated, self-adhering wall panel underlayment that can also act as an air, vapor, and water barrier membrane. It comprises a durable, multi-layer polymer film coated with a proprietary rubberized asphalt adhesive. A release sheet protects the asphalt membrane and prevents the roll from sticking to itself while it is stored and handled. The release sheet is removed as the membrane is installed. HydroShell SA is specifically engineered for vertical applications where the membrane is protected from long-term ultraviolet exposure. It adheres aggressively to most clean, dry substrates, including metal, wood, vinyl, and masonry. HydroShell SA is available in 60 mil thickness. It can seal an entire wall, around penetrations like windows and doors, as a through-wall flashing or protect walls from the damaging effects of the elements.
