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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 fail and require repair. Luckily, there are many ways to fix your bifold doors. Here are some of the most common issues and solutions: Misalignment. Misalignment Misalignment may be the cause of your bi-folding doors not able to seal properly, or causing drafts to your home. This could be due to the frame's movement in different