Metal barn doors are mostly made using a hollow wood core that we build and skin with a thin layer of sheet metal attached by a very strong adhesive. We do this just to help keep the weight down because metal adds up fast in weight. There are many different options with these metal sliding barn doors like the patina metal finish which is typically on regular steel. There are other metals we use such as brass, copper, aluminum, zinc and galvanized metal. All types of finishes, handles, metal bands around the door in steel or brass and rivets at the seams.