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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 commonly damaged components that require repair or replaced. Dust and dirt can cause obstruction to the door track which can cause it to stick. This is a simple solution by removing the dirt and then cleaning. Fixing the hinges The bi-fold door is an excellent way to open up an area. However, they do have no problems. One of the most common issues is when the