1.Loosen the hinge pins holding the door in place.
2.Pull the door out of the frame.
3.Wipe down the surface with a degreasing cleaner.
4.Remove all the hardware from the steel door.
2.Readying the Door for Painting
1.Tape off any areas that you don’t want to paint.
2.Fix any dents in the door's surface.
3.Sand the entire door with 400-grit sandpaper.
4.Wipe down the surface with a damp cloth.
3.Resurfacing Your Door
1.Prime the door with an oil-based primer.
2.Use a roller to apply one coat of paint.
3.Give each side plenty of time to dry fully if you want to paint both sides of the door.
4.Apply a second coat of paint.
5.Let the paint dry completely.
6.Reassemble the door and reattach it to the frame.