Abstract: A metal surface is protected against corrosion, by adhesively bonding a flexible, vapor impermeable metal-plastic laminate to the metal surface, the laminate comprising a metal foil and a plastic film having one surface bonded to one surface of the metal foil. The metal foil is remote from the metal surface with the plastic film being disposed therebetween, and acts as a vapor barrier preventing corrosive vapor, water vapor or oxygen from reaching the metal surface. Such a laminate can also be used for preventing corrosion of metal reinforcing bars in reinforced concrete structures.