Cipageo® Tunel is a Polyvinyl Chloride (PVC) geomembrane formulated and designed for the waterproofing of tunnels which requires materials that present superior performance in physical and chemical resistances. In addition to other attributes, Cipageo® Tunel is flame retardant, is very resistant to cracking after the insertion of fasteners and also is more suitable for a better molding on the the walls of the tunnels due to its flexibility, bringing greater savings in coatings.