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Bifold Door Seal Repair Bifold doors connect doors with tracks that are concertinaed to allow you to open and close a space. In time the doors can have a few issues that require expert assistance. Inadequate maintenance can cause your bifold door to jam and cause hardware issues and doors that are stuck. To help prevent this from happening it is recommended that you grease your bifold doors every few weeks. Deteriorating Seals As bifold doors are constantly exposed to the elements, t