Why Do Car Windows Shatter When They Break?

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Car windows, particularly the door windows, other side windows, and rear windshield, are prone to damage from many different sources. Cracks and other kinds of damage include:

  • Rocks kicked up from passing traffic
  • Stress from improper alignment
  • Stress from an object stuck in the track
  • An accident
  • Vandalism

While the front windshield is made from two layers of safety glass laminated together with a plastic layer between, the side and rear windows are made from a single layer of safety glass. Safety glass is designed in a way that, with a significant impact, it completely shatters into pebble-sized pieces. These tiny bits of glass are much less sharp than typical broken plate glass, and there are no sharp and pointy shards that form when safety glass shatters.

Safety glass is formed through a process known as tempering. The glass is heated, then cooled rapidly. The outside part of the glass is put into a state of compression, while the inside part of the glass is under tension. This process is what causes a glass impact to cause a shattered window when you hit the window.

Because the window shatters instead of cracking, a shattered window will need to be replaced immediately. Some pieces of the shattered window may remain connected and in place, and should be cleared using safety equipment before trying to drive. Also, clean any safety glass up, including vacuuming the seating surfaces and carpet, to prevent the possibility of injury or cuts if you come into contact with the shattered glass.


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Robert

11 years of experience
62 reviews
Robert
11 years of experience
Infiniti FX35 - Brake Pads Replacement (Front, Rear) - Springfield, Virginia
Early arrival....great work....Thank you so much for your services...will be using and recommend you for sure to family n friends!!!! God bless you
Honda Odyssey - Brake Pads Replacement (Rear) - Derwood, Maryland
Showed up on time (actually early!l Answered any questions I had. Completed service quicker than expected! Even helped with tire that had a slow leak.

Augustine

11 years of experience
37 reviews
Augustine
11 years of experience
Hyundai Accent - Brake Pads Replacement (Front) - Albuquerque, New Mexico
I had an appointment to have brakes/rotors done. Augustine is a very nice guy. Personable and polite! He came 30 minutes early for the appointment, and asked me if he could come early before he came. Top quality, will use him again for rear brakes/rotors in a few weeks.
Chevrolet Equinox - Brake Pads Replacement (Front) - Rio Rancho, New Mexico
Augustine was amazing. He was the perfect example of customer service all around. While he was working, I was recommending him to my neighbors. Next time I need work, I will be requesting Augustine specifically!!!!! Please give him a raise or bonus!!!

Chris

21 years of experience
1786 reviews
Chris
21 years of experience
Nissan Altima - Brake Pads Replacement (Front, Rear) - Mission Viejo, California
Chris is outstanding in all aspects. We always select him to service our vehicles. He's always prompt, friendly, and more importantly HE KNOWS WHAT HE'S DOING! Thanks Chris!
Lexus SC430 - Brake Pads Replacement (Front) - Laguna Niguel, California
Chris's delivered excellent service and arrived ahead of schedule. I would want to book Chriss for my next service appointment.

Christopher

9 years of experience
20 reviews
Christopher
9 years of experience
Kia Rondo - Brake Pads Replacement (Rear) - Houston, Texas
Christopher is very knowledgeable about diagnosing the problem, repairing it, and discussing why it is important to fix it. I appreciate him letting me know what future maintenance is necessary. Christopher is very professional while having the ability to making the customer feel at ease. I am satisfied with his work.

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