Abstract: A method of protecting a surface, such as the surface of a windscreen of a motor vehicle, comprises providing a cylindrical roll of a plastic film one side of which has an adhesive coating afforded by a solvent-based acrylic adhesive and in which the plastic film is formed with a plurality of spaced transversely extending rows of perforations, applying the adhesive-coated side of the plastic film to the surface or structure using two spaced resilient rollers, unwinding a desired length of the plastic film from the roll and rupturing the plastic film along a selected row of perforations.