How to prevent car windows from cracking in the summer

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Summer is a great time to take road trips and explore new places, but it can also be tough on your car’s windows. The intense heat and sunlight can cause the glass to expand and contract, leading to cracks and other damage. However, there are steps you can take to prevent car window cracks and keep your vehicle in good condition all summer long.

Park in the Shade

One of the easiest ways to prevent car window cracks is to park your vehicle in the shade. If you can find a spot under a tree or in a covered parking garage, your car will be protected from the sun’s rays and the heat that comes with it. Even if you can’t find a completely shaded area, try to park in a spot that gets at least some shade during the day.

Use a Sunshade or Windshield Cover

Another option is to use a sunshade or windshield cover when you park. These accessories can block out the sun’s rays and help keep your car’s interior cooler. They’re also relatively inexpensive and easy to use. Simply place the shade or cover on your windshield when you park, and remove it when you’re ready to drive again.

Crack Open a Window Slightly

Another way to prevent car window cracks is to crack open a window slightly when you park. This can help reduce the pressure inside the car and prevent the glass from expanding and contracting as much. Just be sure not to leave the window open too wide, as this can make your car vulnerable to theft.

Avoid Slamming Doors or Trunk

When you’re getting in and out of your car, be gentle with the doors and trunk. Slamming them shut can create pressure that can damage the windows over time. Instead, try to close them firmly but gently.

Regularly Clean and Maintain Windows

Regularly cleaning and maintaining your car’s windows can also help prevent cracks and damage. Use a gentle cleaner and a soft cloth to clean the glass, and avoid using abrasive materials that can scratch the surface. Also, keep an eye out for any signs of wear or damage, such as scratches or chips, and address them promptly.

Use a Window Tint

Finally, consider using a window tint to protect your car’s windows from the sun’s rays. A tint can help reduce the amount of heat that enters your car and prevent the glass from expanding and contracting as much. Just be sure to follow local laws and regulations regarding window tinting, as some areas have restrictions on how dark the tint can be.

Additional Tips for Preventing Car Window Cracks

In addition to the above tips, there are a few other things you can do to prevent car window cracks:

  • Keep the interior cool with air conditioning or fans
  • Avoid leaving valuables in the car
  • Choose a parking spot carefully
  • Replace worn or damaged weather-stripping

What to Do If You Notice a Crack in Your Car Window

If you do notice a crack in your car window, don’t ignore it. Small cracks can often be repaired, but larger ones may require the window to be replaced. Contact a professional auto glass repair shop to determine the best course of action.


In conclusion, preventing car windows from cracking in the summer is crucial for maintaining the safety and integrity of your vehicle. By following the tips outlined in this article, such as parking in the shade, using sunshades, and regularly maintaining your windows, you can significantly reduce the risk of cracks and damage. Remember to also keep the interior cool and avoid leaving valuables in the car. If you do notice a crack, it’s important to take action and seek professional help if necessary. By taking these steps, you can enjoy a stress-free summer of driving without worrying about cracked windows.

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