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Repairing the Bottom of a Bifold Door Bifold doors are fantastic for saving space however, they can be troublesome when they begin to bow or scrape against the floor. These issues can be easily solved by making a few minor adjustments. If your bifold doors are scraping on the floor, it is most likely due to a broken track or worn roller. The damaged rollers should be replaced. Bottom pivot As time passes the bottom pivot may loosen or even be able to fall off. This is typically due to cracks or breaks in the wood piece that is where the anchor and pivot p