How to Repair Bifold Door Top Roller Guide If your bifold doors are sticking, they probably require some maintenance. They might need to be cleaned or lubricated, or even adjusted. The issue could be caused by a loose bolt at the top pivot or by the top guide roller. This https://bifold-doors-repair50111.anchor-blog.com/10785280/this-week-s-top-stories-about-bi-fold-door-repairs-bi-fold-door-repairs