How to Repair Bifold Door Top Roller Guide If your bifold door is sticking then it's likely that they need some maintenance. You may need to clean, lubricate or adjust them. The issue could be caused by loose bolts on the top pivot or by the top guide roller. This https://bifold-door-repairs-near63936.activablog.com/30107530/10-things-you-learned-from-kindergarden-that-will-help-you-get-bi-fold-door-repairs