A garage door is a large moving part that can cause severe injury if it should malfunction. An overhead garage door required periodic inspection and maintenance in order to keep it operating properly. Inspect your overhead garage door at least once per month. Once per month disconnect the garage door from its drive system. operate the door manually and make sure that there are no loose bolts and that non of the moving parts or rollers are binding. Lubricate all moving parts to keep them operating smoothly. Lubricate the rollers as directed by the door manufacturer. If you locate a broken component immediate replacement is require red. Keep up with maintenance on the exterior of the garage door. Keep the exterior of a wood door well painted in order to avoid water damage. Do the same with a metal garage door.