Q: What Material Are Windshields Made From?

asked by on

What kind of glass are windshields made from?

Windshields have been utilized to protect occupants who drive and ride in the vehicle from wind and debris including insects, dust, and rocks. The windshield also provides a valuable service by creating an aerodynamic wedge that plows through air, reducing vehicle drag and improving fuel economy. Since the early days of the Model-T, the windshield has evolved – especially in regards to the materials it is manufactured with today.

The windshields on today’s modern cars, trucks, and SUVs are made out of laminated safety glass. The glass is comprised of multiple layers of glass that is infused with UV-A and UV-B coating to protect the driver from ultraviolet rays. The glass itself is extremely difficult to shatter, which was the intent of the designers who developed automotive safety glass. If the glass is hit with a large, hard object, the glass will break into very small particles that will hold together; as opposed to breaking in larger pieces comprised of sharper edges.

The glass has a polycarbonate inner layer that helps bond broken glass particles together in the event of a collision. This design has prevented millions of injuries and allows the driver to safely stop their vehicle after being hit without their vision being compromised by broken glass shards. When a windshield cracks, the outer layer of safety glass is what is broken. This is why a glass crack can be repaired on the outside of the vehicle if it is small enough. To repair these small cracks, an epoxy resin is applied into the crack and fills the crack, forming a translucent and virtually unnoticeable finish.

While it is still possible to drive with a cracked windshield, you should have it replaced as soon as possible because it poses a safety hazard if your car is involved in a front-end collision. Not only is this a safety concern, but there are also cracked windshield regulations that each state follows.

The windshield rules and regulations vary depending on the state in which you live and the vehicle is registered. Not only are these rules intended to help protect the drivers and occupants of the vehicle, but they are also a part of some states’ registration process. In several states, when you have the vehicle emissions tested, they will also include a safety inspection. When you have a cracked windshield, the vehicle is automatically failed and you won’t be able to register the vehicle. A cracked windshield can also cause the police to pull you over and issue you a citation also known as a fix-it-ticket.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. What Material Are Windshields Made From?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Q: How do I delete or edit the contacts in the Uconnect phonebook?

Deleting or editing contacts in your Uconnect phonebook is easy. If you are editing a contact, press the Uconnect phone button, which is a telephone symbol on either the center console or the steering wheel. The system will say...

Q: Q: How do I use the windshield wipers?

The windshield wipers provide much needed visibility in rainy and snowy conditions, by wiping the moisture off of the windows. To use the windshield wipers, first locate the wiper lever, which is on the right side of the steering wheel....

Q: How does the automatic moon roof work?

moon roofs are great – they let in light and air, and they make your car feel larger than it is. Your car’s moon roof offers simple operation, but there are a few things you need to know before you...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...