How to Repair Bifold Door Top Roller Guide If your bifold door is squeaking it's likely they need some attention. You may have to clean and lubricate them or adjust them. The issue could be caused by a loose screw on the top pivot or by the top roller guide. https://bifoldingdoorrepairnearme61086.blogcudinti.com/30698488/where-will-bi-fold-door-repairs-be-1-year-from-in-the-near-future