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. However, over time they may begin to wear out and require repairs. There are a variety of ways to fix your bi-folding doors. https://bifold-door-glass-replace71577.answerblogs.com/30883616/the-history-of-bi-fold-door-repairs