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How to Fix a Bifold Doors Top Pivot Bifold doors can be a great option for creating an effortless transition between indoor and outdoor spaces. Like any door that is bifold, they can also have problems. It is simple to fix the bifolding door. It is usually as simple as loosening one screw and adjusting height. Fixing the hinges Bifold doors can be an excellent method to open up a room and letting in more light. They usually fold back into the frame or lintel of a door