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Repairing the Bottom of a Bifold Door Bifold doors are fantastic for saving space, but they can be frustrating when they begin to slide or scratch against the floor. The good part is that these issues are usually fixable by making a few minor adjustments. If your bifold door is rubbing against the floor, it's probably due to a damaged track or a worn roller. The solution is to replace the damaged rollers. Bottom pivot As time passes, a bifolding door's bottom pivot may loosen or even f