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Bi Folding Door Repair Tips Bi-fold doors are a fantastic way to connect your indoors with the outdoors. They are great to let the sun and fresh air in, but they must be maintained in a timely manner to prevent damage. There are a variety of common issues you might face with your bi folding door. Fortunately, they are simple to repair. Cracked Pivot Pins If you've recently installed carpeting or changed the floor material in your home, you may notice that your bi folding doors are scraping along the bottom. Lu