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Bi Folding Door Repair Tips Bi-fold doors are an excellent way to connect your indoors and outdoor. They're ideal for letting in sunshine and fresh air but it's important to maintain them properly in order to avoid damage. There are several common problems that you may encounter with your bi folding door. Fortunately, they are usually simple to fix. Cracked Pivot Pins If you've recently installed carpeting or changed the floor material in your home, you could be noticing that your bi-folding doors scrape at the bottom