Bi Fold Repairs - How to Properly Maintain and Repair Your Bi Fold Doors Many bi-fold doors become difficult to open, and some may even allow drafts. This is usually because the hardware is falling out of alignment with time. Getting your bi-fold doors back in line is generally simple. https://bifolddoorsrepair83656.blogrenanda.com/36708572/this-is-the-history-of-bi-fold-door-repair