Temperature on Your Damaged Windshield: What To Know

If you have a cracked or chipped windshield, you may wonder how temperature changes might affect it. You may also consider whether you should repair or replace your windshield and how to prevent further damage.

Learn about the effects of temperature on your damaged windshield and how to know when you need windshield repair or replacement.

How Heat Can Affect a Cracked or Chipped Windshield

Heat can cause a cracked or chipped windshield to expand, as the glass molecules move faster and take up more space. The expansion can cause the crack or chip to grow, especially if there is a sudden change in temperature.

For example, if you park your car in direct sunlight for a prolonged period and then turn on your air conditioner, the glass may contract too quickly and cause the crack or chip to spread.

To prevent worsening the current windshield damage, avoid parking your car in the sun for extended periods of time. You can also use a protective cover or a sunshade to reduce the exposure of your windshield to heat.

In addition, refrain from using hot water or a hair dryer to defrost your windshield, as this can also cause thermal shock. Instead, use a soft cloth or a scraper to remove ice or snow from your windshield gently.

How Cold Can Affect a Cracked or Chipped Windshield

Cold can also cause a cracked or chipped windshield to worsen, as the glass molecules move closer together, making the glass more brittle. The brittle nature of the cold glass can place extra stress on the crack or chip, especially if moisture is involved. For example, if you leave your car outside overnight, and there is frost on your windshield, the frost may fill the crack or chip and expand as it melts.

Additionally, the brittleness of the cold glass can make the windshield more susceptible to additional damage from slight bumps or pressure changes. Thus, simply closing your car door with too much force could cause the glass to break.

To prevent cold damage, avoid leaving your car outside in freezing temperatures for long periods. Also avoid using your defroster or heater to warm up your windshield too quickly, as the rapid temperature change can shock the glass material. Instead, use a soft cloth or a scraper to remove ice or snow from your windshield gently. Additionally, you can use a protective cover or keep your car in a garage.

When You Should Repair or Replace Your Damaged Windshield

A cracked or chipped windshield is not only unsightly it’s also unsafe. The damaged areas can impair your vision, compromise the structural integrity of your vehicle, and reduce the effectiveness of your airbags. Windshield damage can also result in fines or tickets if it violates the state laws on windshield safety.

Therefore, repair or replace your windshield as soon as possible. Repairing your windshield is usually cheaper and faster than replacing it, but it is only an option if the crack or chip is minor and does not affect your vision. Replacing your windshield may be necessary if the crack or chip is large, deep, or in the driver's line of sight.



Always seek professional assistance when dealing with a cracked or chipped windshield. A qualified technician can assess the damage and recommend the best course of action. They can also use high-quality materials and equipment to ensure that the repair or replacement is done properly and safely.

If you have a cracked or chipped windshield, contact MS Glass Outlet before the damage worsens. We can repair or replace your windshield to help prevent further damage and ensure your safety.