Wrought Iron Doors - Version 2.0 Wrought Iron Doors - How To Keep Them Beauty. Doors and gates made of wrought iron have a classic beauty of their own. An original door has its own history and lore. If you look at one of these doors, you can get a sense of their history throughout the years. Was the door used to keep people inside or prevent others from entering? One of the primary problems with wrought iron doors is that they often get rusty. Painting is one way to overcome this problem and make sure the door matches the home's trim. If you choose this route, there are certain things you will have to do before you start to paint. If your door already has rust on in, you cannot simply paint over it. The rust must be removed to avoid having your new paint develop bubbles and then peel off. Unless you remove the rust, you're going to have an uneven surface that, when painted, does not allow for an even, attractive finish.