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Tesla shares its glass technology that makes it quieter, tougher, and safer from UV radiation


In a new video recorded at the Tesla Design Center in Hawthorne, California, Tesla Glass Director Mike Pilliod explains how Tesla has made its vehicle glass tougher, quieter, and safer from ultraviolet exposure.

Mike demonstrated the acoustic insulation performance by sliding up his Model Y glass, the noise from outside suddenly dropped to almost zero. He also shared two design sketches of the Tesla Model Y (interior and exterior) that introduced the concept of the full glass roof from the front to the rear of the vehicle.

Tesla Model Y interior concept sketch showing windshield, front side windows, and the expansive glass roof. Image: Courtesy of Tersla, Inc.

Turning this concept into reality took a large amount of R&D effort at the Tesla Glass Technologies Center, “We spent a ton of time making sure that each glass position is the right curvature, is the right size and shape in order to give that seamless approach,” Mike explained.

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Tesla Model Y exterior design concept sketch showing the full glass roof from the outside. Image: Courtesy of Tersla, Inc.

Laminated Double-Glass Side Windows

Since Tesla, Inc. practices constant improvement and innovation across the company, the Silicon Valley-based automaker improved its glass technology over the years. The new laminated double-glass side windows are now implemented in the entire lineup of vehicles. Tesla Model 3 received this upgrade with the 2021 Model 3 refresh.

Tesla Model 3 double-glazed windows in the 2021 refreshed model. Credits: AutoTrader UK.

Tesla has placed an acoustic dampening layer between the side window glass outer and inner layers that reduce road and wind noise during drive. Even when the vehicle is stationary, the outer sound pollution is minimized by this new technology.

Owners of older Tesla vehicles had complaints about the noisy cabin, especially the Model 3. But with this new technology, Tesla has taken care of this complaint. In addition to this, the 2021 Tesla Model S also has Active Noise Cancellation (ANC) to make the vehicle cabin feel even quieter.


UV Radiation Protection

The expansive glass roof is the specialty of all Tesla vehicles, to protect the occupants from heat and UV radiation of the sunlight, Tesla has implemented multiple layers of films in the glass.

Antonio, a glass specialist at Tesla explains in this video (below), that a 2% tint film is combined with other different types of films that reflect solar radiation. A PVB (Polyvinyl Butyral) film combines all of these layers to increase the toughness and flexibility of the roof glass implementations in other areas of a Tesla vehicle.

A comparison of standard glass (left) vs. Tesla Glass (right) UV exposure. Image: Courtesy of Tersla, Inc.

A Tesla roof absorbs 99% of UV radiation itself. This makes the cabin amazingly safe even though the occupants have a large open experience inside the vehicle.


Tesla claims that the glass roof in its vehicles can withstand 4x the weight of the car. This has been practically demonstrated in several Tesla crashes we have seen over the years. Like a Tesla Model 3 rollover accident in China last year, the glass roof stayed intact despite the vehicle rolled multiple times.

Tesla Glass going through roof crush testing at Tesla Design Center. Image: Courtesy of Tersla, Inc.

Before putting the cars into production, Tesla extensively tests the toughness and safety of its proprietary glass with rollover and roof crush testing. After these tests, Tesla puts the glass through thermal tests, Mike further explains in this video.

Glimpse of the Giant Cybertruck Windshield Glass

Tesla also showed the giant Cybertruck windshield glass in this video for a few seconds. This must be one of the spare windscreens for the prototype Cybertruck that is under the use of Elon Musk usually.

Tesla Cybertruck windshield glass. Image: Courtesy of Tersla, Inc.

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By Iqtidar Ali

Iqtidar has been writing about Tesla, Elon Musk, and EVs for more than 3 years on, many of his articles have been republished on CleanTechnica and InsideEVs, maintains a healthy relationship with the Tesla community across the Social Media sphere. You can reach him on Twitter @IqtidarAlii