Disclosed is a method of manufacturing a metallic composite material for use as building material, the metallic composite material including an aluminium core sheet and a titanium clad layer on at least one side of the core sheet. The aluminium core sheet and titanium clad layer are bonded to one another by roll-bonding wherein only the aluminium core sheet prior to roll bonding is preheated to a temperature in the range of 50 to 200.degree. C. The use of such metallic composite material and to a metallic composite material as such are also disclosed.