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Repairing the Bottom of a Bifold Door Bifold doors are great space-savers however they can be a hassle when they begin to bow or scrape against the floor. The good part is that these issues are usually easy to fix by making a few minor adjustments. If your bifold doors are scraping on the floor, this is most likely due to a damaged track or worn roller. The solution is to replace the damaged rollers. Bottom pivot Over time the bottom pivot can loosen or even be able to fall off. This is usually caused by a cracked or broken wood piece that is