Bi Fold Repairs - How to Properly Maintain and Repair Your Bi Fold Doors Many bifold doors are difficult to open and may even allow a draft. The hardware could have gotten out of alignment with time. It's generally fairly simple to get your bi fold doors back on track. https://bifold-doors-repair66906.blogocial.com/20-resources-that-ll-make-you-more-effective-at-bi-fold-door-repair-66421386