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Bifold Door Seal Repair Bifold doors integrate doors with tracks that are concertinaed to open and close the space. In time the doors can be prone to a variety of common issues that require professional assistance. Inadequate maintenance can cause your bifold door to become jammed and cause hardware issues and doors that are stuck. To stop this from happening it is recommended to grease your bifold doors every few weeks. Seals that are degrading Since bifold doors are constantly exposed to the elements, their