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Bifold Door Seal Repair Bifold doors are created by combining door panels with concertinaed tracks that allow the space to be closed and opened. In time, they could suffer from a number of typical issues that require expert attention. 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 prevent this by Lubricating your bifold doors at least every two weeks. Seals that are becoming less durable