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Bifold Door Repair - How to Fix Common Problems Bifold doors can be a great way of connecting your living space while letting more light in your home. However, they can be problematic when the hardware becomes faulty. Adjusting the pivot's adjustment could fix the issue if your bifold doors stick to the carpet when they are closed and opened. Identifying the Hardware Bifold doors are space-saving and fold away and stack on either side of an entranceway. They are popular with homeowners who are open.