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Bi Folding Door Repair Tips Bi-fold doors enable you to fully open up a space and connect indoors with outdoors. are great for letting in the sunshine and fresh air, however it's important to maintain them properly in order to avoid damage. There are a variety of common issues you might face with your bi folding door. Fortunately, they are easy to repair. Cracked Pivot Pins You may have noticed that your bi-folding doors are scraping on the bottom, especially in the ev