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Bifold Door Seal Repair Bifold doors integrate door panels into concertinaed tracks to open and close the space. In time, they could be affected by a variety of common issues that require professional attention. Lack of regular servicing can cause your bifold doors to lock up, causing problems with the hardware and doors that are stuck. To prevent this from occurring it is recommended that you grease your bifold doors every few weeks. Deteriorating Seals The seals on bifold doors could be damaged over time as they