How to Stop a Windshield Crack from Spreading

1. 1
   Use glass cleaner to clean the windshield. Spray a microfiber towel or clean rag with window cleaner. Gently rub the rag or towel over the cracked area so the space around the crack is free of debris. ^[4] Allow the windshield to dry completely.

   • Don’t spray the glass cleaner directly onto the damaged area, as this can interfere with the repair process.
2. 2
   Remove small debris from the crack with a push pin or other sharp object. After you clean the windshield crack, find a push-pin, sewing needle, or another thin and sharp object. With the sharp end of the pin, scrape out any debris that might have found its way into the crack, including glass or dirt. ^[5]
3. 3
   Cover the crack with tape. Use strong, clear tape, like packing tape , to seal the crack. Make sure the crack is completely covered to prevent any further dirt or debris from finding its way inside. Use transparent tape that will allow you to drive and see through your windshield without too much distraction.

   • Tape will only cover the crack and can help prevent further damage, but don’t stop there. Use a windshield repair kit or visit an auto body shop to fully repair or replace the windshield.
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   Purchase a windshield repair kit. The best way to stop a crack is to fix it! Windshield repair kits are available at most auto shops and hardware stores and are a cost-effective way of removing any chips or small cracks . ^[6]

   • Syringe adhesive kits usually include adhesive liquid and a syringe, and involve injecting the adhesive into the crack with a syringe. ^[7]
   • Suction adhesive kits typically include a resin formula to inject into the crack, as well as an applicator that suctions to your windshield. ^[8]
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   Clean the windshield and remove debris from the crack. Spritz a rag or microfiber towel with window cleaner. Gently rub the rag or towel over the cracked area to remove any dirt or debris. Then, use a push-pin, sewing needle, or another thin and sharp object to gently remove any debris. ^[9] Allow the windshield to dry completely.

   • Careful not to get any window cleaner inside the crack itself. This can interfere with your repair!
3. 3
   Apply the resin or adhesive with the included applicator and let the area dry. Once the damaged area is clean and free of debris, insert the adhesive into the kit’s applicator. Then, position the applicator directly above the crack and carefully inject the adhesive into the area and let it dry. ^[10]

   • Each kit comes with its own particular instructions and methods, so be sure to follow the instructions included in your particular kit!
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   Avoid rough or bumpy roads. Too much jerky motion can disturb the crack and cause it to spread. Use a GPS to alter your route to avoid bumpy roads that may cause the crack or chip to become worse. ^[11]
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   Avoid driving in the rain. Rain can carry small debris that might find its way into the crack and cause more problems. Try to drive only on clear, dry days in order to prevent further damage to your windshield. ^[12]
3. 3
   Park under a shelter to avoid severe temperature changes. Severe temperature changes can also affect existing windshield cracks. Keep your car indoors if possible in order to keep it at an even temperature. If you can’t park inside, try parking in the shade, or in the same location from day to day. ^[13]
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*A chipped or cracked windshield left in the elements on a day with large temperature changes may lead to significant additional cracking.