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Bifold Door Seal Repair Bifold doors connect doors into concertinaed tracks to let you open and close an area. In time, they can suffer from a few common problems that require professional attention. A lack of regular maintenance could cause your bifold doors to seize up, leading to problems with the hardware and doors that are stuck. To prevent this from happening it is recommended to lubricate your bifold doors every few weeks. Seals that are degrading Since bifold doors are constan