How to stop windshield cracks

Updated February 12, 2018

Windshield cracks often begin with a chip in the glass. This tends to occur when another vehicle kicks up a stone that flies backward and hits your windshield. If you work on this chip right away, sometimes you can stop the chip from turning into a crack, or stop a small crack from spreading further. This might only be a temporary fix, but it can buy you some time until you save up enough money to have the windshield replaced.

Put the car in a warm garage if the weather is cold. Start with a completely dry windshield that's somewhere near room temperature. Dry the windshield if necessary with a clean cloth or hair dryer.

Buy glue that can stop the crack. Glass shops and auto parts stores sell windshield repair kits containing a specific type of glue. If you only need to fill a chip to stop a crack from beginning, you also can use a high-performance adhesive like Super Glue or Crazy Glue.

Fill in the windshield chip with glue.

Insert glue into the crack. Follow directions on the kit package. Use the syringe-type applicator that comes with the kit. Begin at one end of the crack and fill it with adhesive. Wipe away any excess glue with some rubbing alcohol applied to a clean cloth. Move slowly along the crack until you've filled the entire length with glue.

Allow the glue to dry for at least an hour and preferably for a few hours before driving any distance.

Things You'll Need

  • Clean cloth
  • Hair dryer
  • Windshield repair kit or high-performance glue
  • Rubbing alcohol
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About the Author

Shelley Moore is a journalist and award-winning short-story writer. She specializes in writing about personal development, health, careers and personal finance. Moore has been published in "Family Circle" magazine and the "Milwaukee Sentinel" newspaper, along with numerous other national and regional magazines, daily and weekly newspapers and corporate publications. She has a Bachelor of Science in psychology.