How to Repair a Bifold Door Top Roller: A Comprehensive GuideBifold doors are a popular option for numerous homeowners due to their space-saving style and ease of use. Nevertheless, like any other door type, they can malfunction with time, specifically if not correctly maintained. Among the most common issues with bifold doors is a faulty top roller, which can cause the door to stick, drag, and even fall off its track. In this article, we will supply a detailed guide on how to repair a bifold door top roller, in addition to some beneficial tips and FAQs to help you repair and fix typical problems.Comprehending the bifold door Stuck Door Top Roller MechanismBefore we dive into the repair process, it's necessary to understand how the bifold door leading roller mechanism works. The top roller is a small wheel or bearing that connects to the top of the bifold door and rolls along a track or rail when the door is opened or closed.