Elastomeric-plastomeric polymer distilled bitumen membrane, REOXTHENE Ultralight Technology. EVOLIGHT HP P is a prefabricated ELASTOMERIC-PLASTOMERIC membrane offering good performance, by virtue of a higher percentage of polymers such as POLYPROPYLENE (APP) and POLYOLEFIN (APAO). Its special formulation, comprising the exclusive REOXTHENE Ultralight Technology compound, also results in the only weight-to-thickness ratios of their kind. The addition of special anti-ageing additives provides blends with superior, long-lasting performance characteristics. EVOLIGHT HP P has a spunbond polyester nonwoven carrier stabilized with glass strands parallel to the machine direction. The carrier gives great tensile strength (in all directions) and puncture resistance, with excellent dimensional stability.