How to Repair Bifold Door Top Roller Guide If your bifold doors are squeaking, they probably require a little attention. You may have to clean or lubricate them, or even adjust them. The problem may be caused by loose screws on the top pivot or by the top roller guide. https://bifolddoorrepairsnearme76530.59bloggers.com/31122764/the-12-most-obnoxious-types-of-accounts-you-follow-on-twitter