DIY Bifold Door Roller Replacement The bifold roller is the most common failure point in internal folding doors. A simple DIY fix can be found to fix the problem. The rollers are constructed of stainless steel and are resistant to breaking. They are easy to install using the supplied hardware. https://bifold-door-repair20234.bloggosite.com/37099805/how-to-save-money-on-bi-fold-door-repairs-near-me