Polystick MTS Plus is a self-adhered waterproofing underlayment manufactured with patented Adeso Technology, a dual-compound manufacturing process utilizing a fiberglass mat in a modified compound with an aggressive proprietary self-adhesive applied to the bottom surface of the membrane. Polystick MTS Plus has a surface film from edge to edge. With exceptional bonding strength to itself, this membrane can be installed in both horizontal directions, and provides an immediate waterproof bond at laps and details. The split release film that protects the self-adhesive compound allows for easy application. Polystick MTS Plus features a slip-resistant film surface that has been tested to allow for up to a 180 day UV exposure rating. Polystick MTS Plus is ideally suited for high temperature roof covering systems such as metal roofing. It is also suitable for most mechanically attached roof coverings such as concrete and clay roof tile. With exceptional tensile strength and thermal stability, Polystick MTS Plus is temperature resistant to 265°F. Can be installed as part of a multi-ply underlayment system when covered with Polystick TU Plus or Polystick TU Max.