We had someone bring us a bumper from a car that had a solid color wrap done last year. The bumper was damaged in an accident they had a body shop bondo it and then primer it only. We cleaned it and cleaned it with alchohol and the rags kept bringing up a gray dust. Finally gave wrapping a shot after 4th good cleaning. Adhesion was extremely poor. Customer took the bumper, had it painted and clear, brought it back and we wrapped it with ease!
so.....short answer - WILL NOT STICK