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 due to the hardware falling out of alignment with time. Getting your bi-fold doors back in line is typically easy. https://repairingbifolddoors79804.ziblogs.com/30546300/does-technology-make-bi-fold-door-repair-better-or-worse