Elastomeric-plastomeric polymer distilled bitumen waterproofing membrane. POLYGUM P is a prefabricated ELASTOMERIC-PLASTOMERIC (Plastomer-Polymer Bitumen) waterproofing membrane offering good performance. Made from a polymer-modified distilled bitumen compound. POLYGUM P has a polyester nonwoven carrier stabilized with glass strands parallel to the machine direction. The carrier gives tensile strength in all directions, as well as good puncture resistance and dimensional stability.