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How to Fix Common Bi Folding Door Repair Problems Bi folding doors open up the interior space and create a seamless connection between outdoor and indoor areas. As time passes, they may be worn out and require repairs. Luckily, there are many solutions to fix your bi folding doors. Here are a few common issues and their fixes: Misalignment. Misalignment If your bi-folding doors are a challenge to close or open creating drafts in the house or not sealing correctly The problem could be due to the doors