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  Repairing the Bottom of a Bifold Door They are a great way to save space, but can be frustrating when they begin to sag and scratch the floor. These issues are easily fixable with a few simple changes. If your bifold door is scratching the floor, it's probably due to a broken track or roller that is worn out. The damaged rollers should be replaced. Bottom pivot As time passes the pivot at the bottom of a bifold door may become loose or even fall ou
 
		  
		 
		