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How to Fix a Bifold Doors Top Pivot Bifold doors are an excellent option to create an effortless transition from indoor to outdoor spaces. But, like any door they will encounter problems from time-to-time. Fortunately fixing a bifold door is relatively easy and not invasive. It typically involves loosening one screw and then adjusting height. Fixing the hinges Bifold doors can be an excellent method to open up a space and letting more light. They usually fold back into the frame or lintel