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Bifold Door Seal Repair Bifold doors are made by combining door panels with concertinaed tracks that open and close the space. In time, these doors may have a few problems that require assistance from a professional. Inadequate maintenance could cause your bifold door to jam and cause hardware issues and jammed doors. To stop this from occurring it is recommended to grease your bifold doors every couple of weeks. Seals that are becoming less durable As bifold doors are constantly exposed to the elements, their seals can get deteriorated over t