How to Repair Bifold Door Top Roller Guide If your bifold doors are squeaking to the wall, they might require some maintenance. They could need to be cleaned, lubricated or adjusted. The problem could be caused by an unfastened bolt at the top pivot or by the top guide roller. https://bifolddoorreplacement61025.blogdemls.com/30285064/this-week-s-top-stories-concerning-bi-fold-door-repairs