Elastomeric polymer distilled bitumen waterproofing membrane. ELASTOSHIELD TS4 P is a prefabricated ELASTOMERIC waterproofing membrane offering excellent performance. Made from a special modified distilled bitumen compound with a high percentage of elastomeric SBS thermoplastic rubbers (Styrene-Butadiene-Styrene). ELASTOSHIELD TS4 P is a membrane produced to the standards set by NAT technology, the innovative production system for the control of polymer matrix ageing in bitumen membranes. ELASTOSHIELD TS4 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.