DIY Bifold Door Roller Replacement The bifold roller is the most frequent failure issue in doors that fold internally. A simple DIY solution is available to solve the issue. The rollers are constructed of stainless steel and are resistant to breaking. They are easy to install with the included hardware. https://bifold-door-glass-replace71577.answerblogs.com/30682646/a-step-by-step-guide-to-bi-fold-door-repairs-near-me