DualFlex is a reinforcing flashing that consists of a central strip of stretchy SEBS rubber flanked on either side by an absorbent non-woven felt. The felt allows for easy integration of the flashing and the waterproofing membrane. The SEBS rubber stretches to provide superior movement capability without compromising the waterproofing. DualFlex replicates reinforcement used in European waterproofing applications for many successful years. DualFlex allows easy joint detailing for cold liquid membranes and hot rubberised asphalt.