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Bifold Door Seal Repair Bifold doors incorporate door panels into concertinaed tracks to open and close a space. Over time, they may suffer from a few common problems that require professional attention. Inadequate maintenance could cause your bifold door to become jammed, resulting in hardware problems and doors that are stuck. To stop this from happening it is recommended that you grease your bifold doors every couple of weeks. Seals that are deteriorating As bifold doors a