Henry® Pumadeq™ Flex 30SL is an elastic waterproofing membrane based on polyurethane modified methyl methacrylate (PUMA) technology. PUMA technology combines the speed of PMMA technology in its application, with the elasticity of Polyurethane technology. PUMA technology exhibits much greater elongation and flexibility than PMMA technology . Pumadeq Flex 30SL can be applied on horizontal surfaces with or without reinforcing fleece.