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Bi Folding Door Repair Tips Bi-fold doors allow you to fully open up the space and connect indoors with outdoors. They are perfect for letting sunlight and fresh air in, but they need to be maintained properly to prevent damage. You may encounter a number of problems with your bi-folding door. Luckily, they're easy to repair! Cracked Pivot Pins If you've recently added carpeting or changed the floor material in your home, you could be noticing that your bi-