A crack in your windshield might seem like a minor inconvenience, but it can quickly turn into a bigger problem if not addressed properly. Whether it’s caused by flying debris, extreme weather, or a sudden impact, a cracked windshield can pose serious safety risks and result in costly repairs if not taken care of promptly. Fortunately, there are effective ways to stop windshield cracks from spreading. In this article, we’ll delve into why a cracked windshield is dangerous, and explore practical solutions for keeping those cracks from growing.
Why a Cracked Windshield is Dangerous?

Your car’s windshield is more than just a window to the road; it’s a critical component of your vehicle’s structural integrity. A cracked windshield compromises your car’s safety in several ways:
- Reduced Visibility: Even small cracks can distort your view, making it difficult to see obstacles, other vehicles, and pedestrians. This reduced visibility increases the risk of accidents.
- Compromised Structural Integrity: The windshield contributes to the overall strength of your vehicle. A crack weakens the glass, which can lead to it shattering in the event of an accident, making the car less safe.
- Airbag Malfunction: The windshield supports the deployment of airbags. If it’s cracked, the force of an airbag deploying could cause the windshield to break, reducing the effectiveness of the airbags.
- Legal Issues: Driving with a cracked windshield may be illegal in some jurisdictions, leading to fines or citations.Given these risks, it’s essential to address a cracked windshield promptly. So, how can you prevent a crack from spreading?
How to Stop Windshield Crack Spreading? Immediate Steps
If you notice a crack in your windshield, the first thing to do is to take immediate action to prevent it from worsening. Here are some steps you can take right away:
1. Avoid Sudden Temperature Changes: Sudden changes in temperature can cause the glass to expand or contract, exacerbating the crack. If possible, park your car in a shaded area or garage to avoid direct sunlight. Avoid using the defroster or air conditioning on high settings, as this can also stress the glass.
2. Apply Clear Nail Polish or Super Glue: A temporary but effective fix for small windshield cracks is applying a thin layer of clear nail polish or super glue. This helps hold the crack together and prevents dirt and debris from getting in, which can make the crack worse. Be sure to clean the area before applying the adhesive.
3. Use a Windshield Fix Kit: A windshield fix kit is an affordable and easy-to-use solution for small cracks. These kits typically include a resin that you apply to the crack, sealing it and preventing it from spreading. Follow the instructions carefully for the best results.
4. Keep Your Distance from Other Vehicles: Gravel and debris kicked up by other vehicles can hit your windshield, making an existing crack worse. To minimize this risk, keep a safe distance from cars and trucks, especially on highways or unpaved roads.
5. Drive with Care: Sudden movements, such as sharp turns, quick acceleration, or hard braking, can cause the crack to spread. Drive cautiously, avoiding any unnecessary stress on your windshield.
Professional Repairs: When to Call the Experts
While temporary fixes can help in the short term, a professional repair is often the best way to ensure your windshield remains safe and intact. Here are situations when you should consider professional help:
6. Large Cracks or Chips: If the crack is longer than a few inches, or if there are multiple cracks or chips, it’s time to consult a professional. Larger cracks are more difficult to repair and are more likely to spread.
7. Cracks Near the Edge: Cracks near the edge of the windshield are particularly dangerous because they compromise the structural integrity of the entire windshield. A professional technician can assess the damage and determine the best course of action.
8. Spreading Cracks: If you notice that the crack is getting bigger, even after applying a temporary fix, it’s a sign that professional repair is necessary. Ignoring a spreading crack can lead to the need for a full windshield replacement.
9. Use a Windshield Fix Kit as a Temporary Measure: While a windshield fix kit can provide a temporary solution, it’s important to understand that it’s not a permanent fix. Kits are most effective on small cracks or chips that haven’t spread significantly. If the crack continues to spread after using the kit, professional repair is necessary.
10. Avoid Driving on Gravel Roads: Gravel roads are notorious for kicking up rocks and debris that can hit your windshield. Whenever possible, avoid driving on these roads, or reduce your speed to minimize the risk.
11. Use a Windshield Cover: A windshield cover can protect your glass from debris, hail, and other potential hazards. This is especially useful during stormy weather or when parking in areas with lots of trees or construction.
12. Park in Safe Locations: Parking under trees or in areas with heavy pedestrian traffic increases the risk of something falling on or hitting your windshield. Opt for safer parking spots, like garages or well-maintained parking lots.
13. Replace Worn Wiper Blades: Old or damaged wiper blades can scratch your windshield, creating weak spots that can turn into cracks. Regularly inspect and replace your wiper blades to keep your windshield in top condition.
14. Avoid Slamming Doors: Slamming your car doors can create vibrations that stress the windshield, especially if it already has a small crack. Close doors gently to avoid this issue.
A cracked windshield is more than just a cosmetic issue—it’s a serious safety hazard that requires prompt attention. While there are several steps you can take to stop a windshield crack from spreading, the best solution is often to consult a professional. At Advantage Auto Glass Toronto, we specialize in windshield repair in Toronto. Our expert technicians can assess the damage and provide a reliable, long-lasting fix. Don’t let a small crack turn into a big problem. Call us today at (416) 740-7779 for a quick and efficient repair.
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