The Everbilt 3.25 ft. x 32 ft. waterproof wallpaper membrane is used to seal large wet areas to prevent leaking. This Everbilt waterproof wallpaper membrane is a lightweight, polyetheylene membrane for use under tile and stone surfaces in showers and other wet area applications, and is also suitable for chemical resistant flooring. This wallpaper membrane is rigid, strong, and durable making this membrane top rated for steam showers. This wallpaper membrane can also be used to seal other substrates such as drywall, cement board, green board, and/or plywood. The Everbilt waterproof wallpaper membrane is best installed using a modified or non-modified thin-set mortar to a vertical substrate, applying pressure to the wallpaper membrane in smooth, diagonal sweeps, removing all air bubbles in the process, for a smooth appearance. Available in an 108 sq. ft. roll. Thickness 4 mm. Material: Polyethylene.