A small crack in your windshield might not seem like a big deal, but if left unchecked, it can quickly spread and compromise the structural integrity of your vehicle. A damaged windshield not only obstructs visibility but also weakens the overall safety of your car. Even minor cracks can spread due to changes in temperature, road vibrations, and external pressure. Addressing windshield cracks as soon as possible is essential to maintaining safe driving conditions and preventing costly replacements.
Fortunately, there are several effective ways to prevent a windshield crack from spreading. In this guide, we will explore five proven solutions to stop a windshield crack from getting worse.
1. Apply Clear Nail Polish or Super Glue
Applying clear nail polish or super glue is one of the simplest and most cost-effective temporary solutions to stop a windshield crack from spreading.
How to Apply:
- Clean the cracked area with a dry cloth to remove dust or debris.
- Apply a small amount of clear nail polish or super glue directly into the crack.
- Use a cotton swab or fine brush to spread the liquid evenly.
- Allow it to dry completely before driving.
This method works by sealing the crack and preventing moisture, dirt, and air pressure from worsening. However, this is only a temporary fix, and professional repair is still recommended.
2. Use a Windshield Repair Kit
A windshield repair kit is more durable and effective than household items like nail polish or glue. These kits contain a resin that bonds to the glass, preventing further damage.
Steps to Use a Windshield Repair Kit:
- Purchase a high-quality windshield repair kit from an auto parts store.
- Clean the affected area thoroughly and let it dry.
- Follow the kit instructions to apply the resin to the crack.
- Use a curing strip and expose it to sunlight or UV light to harden the resin.
- Remove excess resin and polish the surface for a clear finish.
Windshield repair kits are a great DIY option but best suited for minor cracks and chips. For larger cracks, professional intervention is necessary.
3. Park in a Shaded or Covered Area
Temperature fluctuations can cause a windshield crack to expand rapidly. Heat causes the glass to expand, while cold causes it to contract, worsening cracks over time.
Preventive Measures:
- Avoid parking in direct sunlight for prolonged periods.
- Use a car cover to shield the windshield from extreme temperatures if possible.
- Avoid pouring hot water on a frozen windshield during winter, as the sudden temperature change can worsen cracks.
Parking in a shaded or covered area minimizes the glass's stress, preventing further crack propagation.
4. Avoid Bumpy Roads and Sudden Impact
Driving on rough roads or hitting potholes can put additional stress on your windshield, causing a small crack to grow.
What You Can Do:
- Drive cautiously and avoid potholes, speed bumps, and rough terrains whenever possible.
- Maintain a safe following distance to prevent rocks and debris from hitting your windshield.
- Close car doors gently to avoid sudden vibrations that can worsen the crack.
Taking these precautions helps minimize additional stress on your windshield, prolonging the integrity of the glass.
5. Seek Professional Windshield Repair or Replacement
While DIY methods can temporarily stop a crack from spreading, professional repair is the most reliable and long-term solution. Auto glass specialists use high-quality resin and advanced techniques to fix cracks effectively. In cases where the crack is too large, a windshield replacement may be necessary to ensure safety.


Why Choose Professional Repair?
- Experts use specialized equipment to provide a durable and seamless repair.
- Professional repairs restore windshield strength and clarity.
- Insurance may cover windshield repair costs, making it an affordable option.
Why Choose Central KY Autoglass?
Central KY Autoglass is committed to providing top-notch windshield repair and replacement services. Here’s why you should trust us with your auto glass needs:
Experienced Technicians
Our skilled professionals use advanced tools and high-quality materials to ensure durable repairs.
Fast and Reliable Service
We understand the importance of a safe windshield and offer quick turnaround times to safely get you back on the road.
Affordable Pricing
We provide competitive rates and work with most insurance providers to make repairs and replacements cost-effective.
Customer Satisfaction Guarantee
We prioritize customer service and ensure each repair meets the highest safety standards.
Mobile Repair Services
Can’t make it to our shop? No problem! Our mobile service allows us to fix your windshield at your convenience.


When to Replace the Windshield?
A full windshield replacement is recommended if the crack is larger than a dollar bill or extends across the driver’s line of sight. A crack that reaches the edges of the windshield can compromise the structural integrity of the entire glass, making your car unsafe in the event of a collision. Additionally, multiple cracks or chips in the same area weaken the glass, increasing the likelihood of shattering under pressure.
Replacing your windshield promptly ensures you maintain clear visibility, structural integrity, and overall safety while driving. Consulting a professional is the best action if you are unsure whether your windshield needs repair or replacement.
Conclusion
A windshield crack may start small, but it can quickly spread without proper care and lead to costly repairs. By using temporary fixes like nail polish or repair kits, parking in a shaded area, avoiding rough roads, and seeking professional help, you can prevent further damage and ensure your safety on the road.
If your windshield has a crack, don’t wait until it worsens. Contact Central KY Autoglass today for professional windshield repair and replacement services. Our expert team ensures high-quality, affordable solutions to keep your windshield in perfect condition. Call us now or visit our website to schedule an appointment!