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Bi Fold Door Repairs Bi fold doors can be difficult to operate if the hardware damaged. The hinges at the top and bottom rollers are the most frequent components that can be damaged and require repair or replacement. The track for the door can become blocked by dirt and dust and can cause it to stick. It is easy to fix this problem by cleaning and getting rid of the dirt. Fixing the hinges Bi-fold doors are ideal for opening the space. However, they do not have no problems. One of the most common problems occurs when hinges aren't aligned properly.