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How to Fix Common Bi Folding Door Repair Problems Bi-folding doors create a seamless transition between outdoor and indoor spaces. In time, they will begin to wear out and need repairs. There are several ways to fix your bifolding doors. Here are a few common issues and solutions: Misalignment. Misalignment Misalignment may be the cause of your bi-folding doors not being capable of sealing properly, or creating drafts in the home. This could be due to the frame's movement