Elastomeric-plastomeric polymer distilled bitumen waterproofing membrane. MODIBOND X P is a prefabricated ELASTOMERIC-PLASTOMERIC membrane offering excellent performance. By virtue of its special formulation, the innovative compound - made up of a higher percentage of polymers, and particularly light fillers - results in a membrane with the only weight-to-thickness ratios of their kind. MODIBOND X P has a spunbond polyester nonwoven carrier stabilized with glass strands parallel to the machine direction. The carrier gives good tensile strength (in all directions) and puncture resistance, with excellent dimensional stability.