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Bi Folding Door Repair Tips Bi-fold doors let you fully open up the space and connect indoors with outdoors. They are great for letting in sunshine and fresh air but it's essential to maintain them properly in order to avoid damage. There are many common issues that you may encounter with your bi folding door. Luckily, they're easy to fix! Cracked Pivot Pins You might have noticed that your bi-folding doors are scratching along the bottom when you've added carpeting to your home or changed the flooring material. Luc