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How to Fix a Bifold Doors Top Pivot Bifold doors are ideal for creating seamless transitions from outdoor to indoor spaces. Like all doors that is bifold, they can also be a problem. Fortunately fixing a bifold door is fairly simple and not invasive. It's usually as simple as loosing screws and changing the height. Fixing the hinges Bifold doors can be a great way to open up a room and letting in more light. They typically fold back into the frame or lintel of a doorway, but can also slide to either side