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How to Fix a Bifold Doors Top Pivot Bifold doors can be ideal for creating an effortless transition from outdoor to indoor spaces. Like any door with bifold doors, they may be a problem. Fortunately fixing a bifold door is fairly simple and not intrusive. It is usually as simple as loosening a screw and changing the height. Fixing the hinges Bifold doors are an excellent method of opening up a room and letting more light. They typically fold back into the frame or the lintel of a doorway but