Now the welding on the underside is all done ive zinced the metal then seam sealed the repairs, but know wanna spray some stonechip on the over them. The problem is the floor is realy dirty a mixture of waxoil, oil, grease ect. . . I wanna get it nice and clean before spraying over the repairs so im not spraying over dirt, but so far ive tried scraper, wirebrush, brake cleaner, thinners and degreaser with no real luck What can i use without stripping the old underseal of with is still good? Or just more elbow grease?
Thanks Charlie