Polystick TU PLUS is a homogeneous rubberized asphalt waterproofing underlayment fiberglass reinforced, with a high strength polyester fabric on the upper surface, designed specifically for use as a tile underlayment. Polystick TU PLUS is ideally suited for use where roofing tiles are installed via adhesive set applications; Polystick TU PLUS can also be installed in mechanically attached systems as the rubberized asphalt seals around correctly installed nails on the weathering surface. Polystick TU PLUS is designed for use in new construction and re-roof application where tiles may be stacked on rooftops for extended periods of time. Polystick TU PLUS may be exposed for up to 180 days. Polystick TU PLUS underlayments are manufactured using patented Adeso Dual-Compound Self-Adhesive technology, whereby a "true" polymer modified asphalt compound is applied on the top layer and an aggressive self-adhesive compound is applied on the bottom layer. Polystick TU Plus features patented SealLap, a factory applied adhesive treatment at the membrane overlap. Each of these patented features provide for greater ease of application as well as improved product performance.