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Bifold Door Seal Repair Bifold doors connect doors into concertinaed tracks to let you open and close an area. Over time they can develop a few common issues that require professional assistance. Inadequate maintenance can cause your bifold door to jam which can lead to hardware issues and jammed doors. To prevent this from occurring, you should lubricate your bifold doors every couple of weeks. Deteriorating Seals The seals on bifold doors could get worse with time, since they are always exposed