How to Fix Common Bi Folding Door Repair Problems Bi folding doors allow for the expansion of the interior space and create seamless connections between outdoor and indoor areas. As time passes, they may be worn out and require repair. There are many solutions to fix your bi-folding doors. Here https://bi-folding-door-repair-ne75868.develop-blog.com/36889644/it-s-the-evolution-of-bi-fold-door-repair