Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. Why Do Car Windows Shatter When They Break?

Why Do Car Windows Shatter When They Break?

Car Windows Shatter

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.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

The Traveler’s Guide to Driving in Malaysia
CraigBurrows / Shutterstock.com Malaysia is a popular destination for many tourists today. The country has amazing sights and attractions that you will want to explore....
Veteran and Military Driver Laws and Benefits in New Mexico
The state of New Mexico offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch...
P2159 OBD-II Trouble Code: Vehicle Speed Sensor B Range/Performance
Diagnostic Trouble Code (DTC): P2159 P2159 code definition Vehicle Speed Sensor B Range/Performance...


Related questions

Q: Power window not working

This description is rather vague but I'll do my best. If a single power window motor isn't working the most likely cause is the motor, switch, or regulator. When the switch is pressed, power is sent to a DC motor....

Q: How do I fix a stuck wiper?

Your windshield wipers will stop operating if snow, ice, or debris is in their way. This occurs to protect the wiper motor from overexerting. If this happens, stop your vehicle, and remove any snow, ice, or debris that is in...

Q: How do I manually dim the rearview mirror?

The rearview mirror is a very important safety feature that offers you visibility out of your rear window. At night, however, the glare from surrounding vehicles can reflect off of the rearview mirror and cause unsafe visibility issues for you....