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Bi Folding Door Repair Tips Bi-fold doors are a great method of connecting your indoors and outdoors. They are great for letting the sun and fresh air in, however they must be maintained properly to prevent damage. There are several common problems that you may have to deal with when using your bifold door. Fortunately, they're easy to fix. Cracked Pivot Pins If you've recently added carpeting or changed the floor material in your home, you may be noticing that your bi-folding doors scrape along th