How to Fix Common Bi Folding Door Repair Problems Bi folding doors open up the interior space and create an unbreakable connection between outdoor and indoor areas. However, over time they may begin to wear out and require repair. There are plenty of ways to fix your bi folding doors. https://bifoldingdoorrepair84707.blogkoo.com/7-small-changes-that-will-make-a-huge-difference-in-your-bi-fold-door-repairs-50324424