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Bi Folding Door Repair Tips Bi-fold doors are a fantastic method of connecting your indoors and outdoor. They are ideal for letting the sun and fresh air in, but they need to be maintained properly to prevent damage. There are many common issues that you may encounter with your bi folding door. Fortunately, they're easy to repair. Cracked Pivot Pins If you've recently added carpeting or changed the flooring material in your home, you may be noticing that your bi-folding doors scrape along