Windshield Cracked - Will Cold Weather Cause It to Spread?

Driver view of damaged, cracked windshield

A crack in your windshield is not only unsightly, it could be a potential hazard too. And as temperatures in many areas drop to below freezing, you have to be careful the wintry weather doesn’t cause the crack to spread, causing further damage. Once the temperature outside drops below freezing, a crack in your windshield is 60% more likely to increase in size. If you have a cracked windshield, here are some things you should and shouldn’t do.

Why Cold Makes a Crack Spread

One of the first things people think about when they get a crack in their windshield is, how to keep a cracked windshield from spreading. It’s not easy to do, especially when you have to contend with changes in weather. You see, glass expands and contracts as the temperature changes. As the temperatures get lower - the glass contracts. When the temperatures rises, the glass expands. This is why it’s so important to address a crack in your windshield before the weather gets too cold, and before the crack increases in size.

Ice on Car Windshield? Using Your Defroster Can Hurt

When you have a crack in your windshield, the cold temperature outside can cause the glass to contract, which may increase the size of the crack (as stated before). Unfortunately, when it is cold out, and there is ice on your car windshield, you may need to use your defroster to warm the glass and remove any ice buildup. However, this change in temperature can make the crack in your windshield even worse. The heat from the defroster causes your windshield to heat up faster. The sudden change in temperature causes the glass to expand too quickly, which can result in further damage. The same is true if you pour hot water on your windshield. Intense cold and intense heat combined will result in the crack spreading even quicker - if not immediately.

Compromised Safety

As mentioned, a cracked windshield isn’t just an eyesore - it is a safety hazard. In addition to impairing your vision when you drive, a cracked windshield can compromise the structural integrity of your vehicle, minimize the safety feature of your glass. Most auto insurance policies cover windshield replacement. Check to see what your policy covers and if going through your insurer is the best option.

Repair Versus Replacement

You may have heard or read that if you have a crack in your windshield, you have two options: repair your windshield, or replace it. Repairing your windshield may seem like the more affordable and convenient option, but this is not the case. First, it is important to note that repairing a windshield is only an option if the crack is minor. Once it starts spreading, replacing your windshield is necessary.

For long-term stability and safety, replacing your windshield is the best option. It takes a little time to cure (about 1 hour). Although you will have to wait 24 hours before heading to a car wash (rain, moisture, and handwashing during that waiting period is fine), you’ll have a brand-new windshield.

Get it Fixed Now

Having a cracked windshield can be a hassle - but taking care of it doesn’t have to be. The professionals at Glass Doctor have the expertise needed to replace your car’s cracked windshield and get you back on the road safely. Plus, with our Windshield Protection Plan all our work is guaranteed, which covers unlimited repairs and one replacement for up to 12 months! To learn more call us at, 833-974-0209 or schedule an appointment online.