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Bifold Door Seal Repair Bifold doors are created by combining door panels and concertinaed tracks that allow the space to be closed and opened. In time, they could be affected by a variety of typical issues that require expert attention. A lack of regular maintenance could cause your bifold doors to seize up, causing issues with the hardware as well as stuck doors. To stop this from happening it is recommended to grease your bifold doors every few weeks. Seals that are degrading As bifold doors are const