https://theflatearth.win/wiki/....Post:11_Ways_To_Comp
Bi Fold Repairs - Save Money and Keep Your Home Secure If your bi-fold doors aren't easy to open or allow drafts, it is likely that the hardware has deteriorated. It requires repair. If you don't address this issue, it could lead to expensive repairs. Whether your internal or external bi fold doors are glazed or solid, they are susceptible to wear and tear. Regular maintenance can help reduce the damage. Locks Bi fold doors are gorgeous and functional design elements for any home. However, as wit