I painted my front door on the inside and on the outside (portion protected from the wind and rain by my storm door) . I did not paint the side windows outside yet as I have to power wash them first. 75 % complete and it looks fine; the fiberglass absorbed the paint and flattened it smooth.The masking tape worked great except for the rubber gaskets which it did not protect. I had to eyeball around the rubber gaskets. I should of used Vaseline on the rubber gaskets.