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How to Fix a Bifold Doors Top Pivot Bifold doors are a great option to create a seamless transition between outdoor and indoor spaces. Like all doors that is bifold, they can also be a problem. Fortunately fixing a bifold door is fairly easy and non-intrusive. It usually involves loosening a screw and adjusting the height. Fixing the hinges Bifold doors are an excellent method to open up a space and letting more light. They usually fold back into the frame