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Bifold Door Seal Repair Bifold doors incorporate door panels into concertinaed tracks to let you open and close a space. Over time the doors can have a few issues that require expert assistance. Inadequate maintenance can cause your bifold doors to lock up, which can lead to problems with the hardware and doors that are stuck. You can avoid this from happening by making sure that your bifold doors are lubricated at minimum every two weeks. Seals that are becoming less durable