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Bifold Door Seal Repair The bifold door is a great option for any home however, it needs proper installation and maintenance to work correctly. This includes a thorough integrity inspection along with lubrication and a detailed review of any issues to prevent them from happening in the future. To prevent sticking to prevent sticking, bifold doors are designed to be ever-so slightly smaller than the frame. However, this also means that air can get in through the gaps. To stop this, you can install a weather se