3M™ C Guard Waterbased Protective Coating is a flexible, chip resistant textured coating for cars, trucks, caravans, buses and trailers. 3M™ C Guard Waterbased Protective Coating provides corrosion protection to areas subject to stone damage, eg. apron/spoiler, sill panel, lower door, wheel arches, quarter panel, underbody and more!. 3M™ C Guard Waterbased Protective Coating is also recommended for its protective and sound deadening properties when used in the engine bay, luggage compartment, boot wells and floor area. Apply with 3M™ European Spray Gun, putty or underbody gun. 3M™ C Guard Waterbased Protective Coating dry film may be over coated with automotive topcoat without priming.