How to fix a windshield crack with krazy glue

Road debris and rocks can fly on a windshield when the tires of other vehicles’ collect them and throw them back in a car or truck next. A windshield crack may seem small when they first appear, but can run and become quite large. Changes in cool weather at night to warm up in the day can also cause the crack to spread through the windshield. Overnight freezes can even carry a crack to expand and break the entire windshield of a car.


Open the Krazy Glue by turning the cap counterclockwise. Use a pair of scissors to trim the end of the tube so that the liquid can flow.

Apply Krazy Glue to the inside of the windshield along the length of the crack. Tighten the tube slightly as it starts at one end of the crack and move to the other end.

Run the Krazy Glue in a thin line along the crack with a cotton swab. Wipe any excess glue with a cotton swab.

Apply Krazy Glue to the outside of the windshield along the crack in the same way.

Tips & Warnings

  • When you are applying Krazy Glue to the windshield do not squeeze the tube too hard or the glue will run through the windshield and be visible.
  • This process will temporarily keep a crack becoming larger on a windshield. However, due to changes in temperature and rain the glue will eventually disappear. At this point, you will need to reapply it.
  • Check your state’s laws for windshield replacement factors. When the crack in a windshield is a predetermined amount of inches from the edge of a windscreen that does not pass inspection and will need replacement.
  • It may be a good idea to buy a Krazy Glue remover package in case of accidental spills on the windshield or on the hands.
  • Do not get Krazy Glue on your hands, fingers or skin, as it adheres to the skin to the order of the day, what it touches.