a method of thermally insulating an object that requires a class a standard insulation material , said method comprising suitably locating a metallized polymeric reflective insulation material adjacent said object , wherein said polymeric material is selected from a closed cell foam , polyethylene foam , polypropylene foam , expanded polystyrene foam , multi - film layers assembly and a bubble - pack assembly . the object is preferably packaging , a vehicle or a residential , commercial or industrial building or establishment . the polymeric material may contain a fire - retardant and the bright surface of the metallized layer has a clear lacquer coating to provide anti - corrosion properties , and which meets commercial reflectance criteria .