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How to Fix Common Bi Folding Door Repair Problems Bi-folding doors provide seamless transitions between indoor and outdoor spaces. However, as time passes, they may begin to wear out and require repairs. There are several ways to fix your bi-folding doors. Here are some of the most common issues and their fixes: Misalignment. Misalignment If your bi-folding doors are a challenge to close or open and are causing drafts within the home or not sealing correctly, the problem may be