As with any project, always make sure that you have all of the materials you will need before you begin! This will help save time, effort, and your sanity. You should have a 2'' flat steel track, hanger rollers, bottom rollers, a bottom roller guide, track joint brackets, screws, spacers, carriage bolts, and lag bolts. You should also have your barn door, which you can make with 3/4'' tongue-and-groove planks. Hold them together with 2 1/2'' thick vertical stiles. Add 2 horizontal rails, one on top and one on the bottom on both sides. This should make the total thickness of the frame 1-3/4''. If you would like, you can also add 1/2'' thick planks cut and crossed to make an "x" on one side of the door to really give it a more authentic barn door feel.
Step One: You'll want to cut a 1''x4'' a little wider than your track, but the same length. This will help both support the heavy weight of the barn door, as well as secure your track to the wall. Use your lag bolts, drywall anchors, and spacers to secure the mounting board.
Step Two: Always follow the manufacturer's instructions. Using them as a guide, assemble your steel track with the joint brackets. Cut the track to the proper length. If you want to be able to open your door the entire width of the door space, then you will need to cut the track so that it is twice the width needed for the door.
Step Three: To attach the steel track to the mounting board and wall, you'll need some holes in the steel track. Measure out and drills holes as necessary. Always take precautions so that your drill bit doesn't slip and the metal doesn't overheat.
Step Four: Next up, install your track and spacers. Measure everything for the track system. Using your lag bolts, install your track and the spacers to the mounting board and wall. Make sure that everything is perfectly level. It is very important that everything is level - this can cause you major problems if it is not.
Step Five: Using the provided nuts, washers, and carriage bolts, follow the manufacturer's instructions to attach the hanger rollers and hang your door. Use your socket wrench as needed to make sure everything is as tight as it needs to be. You may need a helping hand or two to attach the bottom guide and rollers as well as to hang the door on the track.