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Bi Fold Door Repairs If the hardware is damaged, it could cause problems when operating bi-fold doors. The top hinges and bottom rollers are the most frequently damaged parts that need to be serviced or replaced. Dirt and dust can also block the door track which can cause it to stick. This is a straightforward fix by getting rid of the dirt and washing. Fixing the hinges Bi-fold doors are ideal for opening up a space. However, they do come without their challenges. The hinges may become m