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Bifold Door Repair - How to Fix a Sticky Bifold Door If your bifold doors stick instead of opening smoothly and close, the problem is usually fixable by a few easy steps. Here's how. The addition of carpet or changing the flooring material often causes bifold closet doors to scratch the floor. This can be fixed by raising the door using the bottom pivot adjustment. A little maintenance is required to keep the hardware free of dirt, debris, and dust. Versatility Bifold doors can be a g