Polystick TU, is a homogeneous rubberized asphalt waterproofing compound, fiberglass reinforced, with a granular surface designed specifically for use as an underlayment for roof tile installations. The rubberized asphalt seals around correctly installed nails of the weathering surface. A split release backing film aids in the easy positioning of sheets to maintain proper line. Polystick TU 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 features patented FASTLap® for granule free roll ends, as well as SEALLap®, a factory applied adhesive treatment at the product overlap. Each of these patented features provide for greater ease of application as well as improved product performance. Polystick TU is packaged in a roll of 100 sq ft (finished roof coverage) weighing 70 lbs. Material is packaged in a patented box, Easybox® that facilitates easy handling of rolls.