How Texas Heat Affects Auto Glass More Than Most
Drivers Realize

 
Texas heat is tough on vehicles. Most drivers think about engine strain or tire pressure, but your windshield is one of the parts most affected by high temperatures.

Driving through areas like Westlake or Trophy Club, especially during peak summer, exposes your vehicle to intense sunlight and heat for extended periods.

When your car sits in the sun, the interior temperature can climb well above 130 degrees. Your windshield absorbs much of that heat.

This creates stress within the glass.

Fun fact: Glass expands when heated, but not always evenly. This uneven expansion creates pressure points, especially where there is existing damage.

If you already have a chip or crack, heat can cause it to spread quickly.
Sudden temperature changes make it worse.

For example:
  • Turning the AC on full blast in a hot car
  • Pouring cold water on a hot windshield
  • Moving from direct sunlight into shade quickly

These shifts create thermal shock.

Did you know: Thermal shock is one of the leading causes of cracks spreading in summer months.

Simple habits can help protect your windshield:
  • Use a sunshade when parked
  • Park in shaded areas when possible
  • Avoid sudden temperature changes

These small steps reduce stress on the glass.

If you already have damage, summer is not the time to ignore it. Heat will almost always make it worse.

If you are unsure about your windshield’s condition, call Optic-Kleer Northwest DFW at (940) 206-7126 and we can take a look before it becomes a bigger issue.