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Bifold Door Seal Repair Bifold doors integrate doors with tracks that are concertinaed to allow you to open and close an area. Over time, these doors may 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. You can avoid this from happening by making sure that your bifold doors are lubricated at minimum every two weeks. Deteriorating Seals Seals on bifold doors can degr