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Bi Fold Door Repairs Bi fold doors can be difficult to operate if the hardware is damaged. The top hinges, and bottom rollers, are the most often damaged components that require servicing or replaced. Dirt and dust can also hinder the track of the door which can cause it to stick. It is simple to fix this issue by cleaning and removing the dirt. Fixing the hinges Bi-fold doors can open an area in a stunning way. They are not without their challenges. of the most common problems is when hinges