a method for finishing a repaired surface is described . the method includes wiping a sealer on the repaired surface to seal microporosity in the repaired surface , the sealer consisting essentially of a mixture of polymer , at least one filler , solvent , and optionally microspheres ; and applying a top coat to the sealed surface without sanding the sealed surface , the top coat being free of visible pinholes . sealers and tools for applying surface sealers are also described .