How to Repair Auto Glass

by Chelsea Day

Windshields, and sometimes even car windows, inevitably get small chips and cracks in them. Rocks and pebbles get kicked up from the ground by other passing cars, or a stray rock flies out of a passing pavement truck. It's frustrating, and many people think that they have to rush out and replace their windshield immediately. However, many cracks and chips can be easily repaired at home with just a few materials and a little time.

Pick out any loose glass chips from the crack with the razor blade.

Clean the area thoroughly with a damp cloth.

Dry the area completely with a clean cloth, using a hairdryer if necessary to remove all the water from the crack.

Center the suction cups around the center of the crack or chip, suctioning them firmly to the car.

Insert the tube into the center of the suction cups, making sure that it is secured as tightly as possible.

Pour the repair material into the tube.

Insert the plunger into the tube and push down on it, squirting the repair material onto the chip. The pressure will cause the material to squirt into the base of the chip and throughout any cracks.

Wait 1 minute to allow the repair material to fully fill the cracks, then remove the tube and suction cups.

Place the film that was included in the repair kit over the crack or chip.

Use the edge of the razor blade to flatten the film and the repair material completely, pushing the excess resin into the unfilled portions of the crack.

Wait 15 minutes for the repair material to dry fully.

Remove the film from the auto glass.

Use the razor blade to scrape off any excess repair material.


  • check If your car has a crack longer than 4 inches or has shattered pieces, the glass cannot be repaired and needs to be replaced. Take your car to an auto mechanic to have the glass replaced. Fix cracks and chips as soon as they happen so that they don't spread and become unfixable.


  • close Don't repair the windshield in hot heat, humidity or rain, as these elements will cause the material to not dry properly.

Items you will need

About the Author

Chelsea Day started writing professionally in 2005 and has been featured in publications such as "Beverly Hills 90210" and "The Travel Magazine." She holds a Bachelor of Arts in political science from University of California, Los Angeles and runs the popular lifestyle blog Someday I'll Learn.

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Photo Credits

  • photo_camera Kiel Latham