N-FLASH is a 1.5 mm (60-mil) thick, uncured neoprene material used as a heavy duty reinforcing layer and flashing for the STRATASEAL HR hot-applied rubberized asphalt membrane system. The flashing is extremely malleable allowing it to easily contour to irregular shapes, around penetrations, and corners. Its resiliency enables it to expand and contract without failing. It resists tearing, cracking, abrasion and thermal deterioration.