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Why do cracks in windshields grow in the heat?

Jul 9, 2020 4:35:18 PM / by Windshield Remedy Content Team

Many drivers are tempted to ignore small cracks on their windshield, believing that the crack won't get any worse. However, even if no further damage comes to your windshield, these cracks can become larger and more serious. One of the most common causes of growing windshield cracks is heat. 

Why Cracks Grow in Heat

The windshield on a modern vehicle is an important part of the vehicle's structural integrity. In most cases, a windshield crack will grow when the windshield is subjected to force, usually by expansion or flexing. Both heat and cold will have a significant effect on the molecules that make up the glass in your vehicle's windshield. Temperature changes will force the metal frame around the glass to expand or contract, which may lead to growth in an existing windshield crack. 

Other Factors that Cause Cracks to Grow

In addition to heat, other forces may also cause your windshield cracks to grow. Examples include extreme cold, weight on the windshield and even the vibrations from loud music from the vehicle's stereo. While some of these factors can be avoided, others may be out of your control. For this reason, it is important to protect your cracked windshield from extreme conditions as much as possible and get the repair completed quickly. 

Getting Your Cracked Windshield Repaired 

If you have a crack in your windshield, you need to schedule a repair as soon as you can. Most small cracks can be successfully repaired without the need for a full windshield replacement. However, if you 20190109_133431-1allow the crack to grow too large, a repair may not be possible. Thus, we strongly recommend a quick repair. 

Windshield Remedy offers mobile repair services to clients throughout Houston and the surrounding area. We can repair even some of the most complex cracks, including cracks over 30 inches in length. 

Tags: Wipers

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