How Opposing Temperatures Affect Your Glass

Shifting temperatures, particularly when the temperature inside the car is different to the temperature outside the car, can have a number of different effects on your auto glass. In some cases, they can even cause damage to your vehicle’s glass. If that’s the case, bring your car into A+ Auto Glass for an exceptional repair or replacement service. You can trust us to fix the problem as quickly as possible. Here are the different effects you can expect from opposing temperatures.

Fogged up Windows

Fogged up windows are incredibly common when the inside of your car is warm and the outside air is cold. The best way to defog them is to open your windows or to blow cold air on them through your car’s air vents. Once they have defogged, you should then train hot air on the glass to keep them from fogging up again. This will ensure that the temperature of the glass meets or exceeds the temperature inside the car.


Naturally, the reverse happens in the heat. Fog will appear on the outside of your windows when the temperature inside your car is lower than the temperature outside of your car. In this case, the fog can be removed by your windshield wipers and fog can be avoided by lowering your air conditioning or switching it off altogether.


Your Windshield in Winter

In winter, it is common for vehicle windshields to freeze. One quick solution that a lot of people use is to pour boiling hot water over their windshield. While this may remove the frost, it is terrible for your auto glass. Glass shrinks when frozen and will expand rapidly when hot. This can cause your windshield to crack instantly. Instead of using boiling hot water, use tepid water instead. Or, better yet, use a dedicated deicer.


Your Windshield in Summer

In the heat of summer, you should protect your windshield (and your car in general) from strong direct sunlight. The sun in summer can cause your car’s windshield to crack by heating up the edge of the windshield more than the center. This is because the sealant used to keep your windshield in place is black and black absorbs the sun’s heat much more than white or glass does.


Temperature Changes of Any Kind Can Damage or Weaken Your Glass

In truth, it doesn’t matter whether it is winter, summer, fall or spring, any sudden changes your vehicle glass’s temperature can cause significant damage to the windshield. Glass naturally expands and contracts slowly over time. But suddenly speeding this contraction or expansion up can result in serious cracks — the kind that can’t be repaired. Take care when heating or cooling your car so that you don’t have to take your vehicle in for auto glass replacement any time in the near future.