Elastomeric polymer distilled bitumen waterproofing membrane.ANTIRADICE FLEX 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). ANTIRADICE FLEX 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. ANTIRADICE FLEX P is a membrane designed to deliver unbeatable resistance to root penetration according to standard EN 13948. The special compound enhanced with the addition of PREVENTOL B5 from LANXESS actually makes an excellent chemical barrier against membrane puncture by plant roots, ensuring the membrane delivers perfect watertightness and resistance to aggressive chemicals. ANTIRADICE FLEX 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.