How is laminated glass made?
Two sheets of glass are bonded with a plastic layer between them. AGC, a car glass maker, describes its laminated glass as a process that “bonds two pieces of glass together using a plastic interlayer sheet,” and says it’s mandatory for windshields under road regulations.
Hyundai’s 2023 Palisade service bulletin names that layer: the glass sheets are pressed together after polyvinyl butyral (PVB) film is inserted between them. The interlayer can carry more than strength. Laminated privacy glass uses a dark PVB instead of a clear one, so its shade is sealed inside the pane, and a sound-damping PVB makes acoustic glass.
How does it differ from tempered glass?
Laminated glass is a bonded sandwich; tempered glass is one heat-treated sheet. The two behave differently when hit and when the sun is on them.
| Laminated | Tempered | |
|---|---|---|
| Build | Two sheets and a PVB interlayer | One sheet, heated then air-cooled |
| When broken | Interlayer holds the fragments together | Breaks into small fragments without sharp edges |
| Usual position | Windshield; some side, rear and roof glass | Most side windows and back glass |
| Average UVA blocked, 29 cars | 96% (windshields) | 71% (side windows) |
The UVA figures come from a 2016 JAMA Ophthalmology study by Boxer Wachler. The Skin Cancer Foundation says the laminated windshield is treated to block some UVA, while the tempered side and back glass “does not block UVA rays effectively.”
What does laminated glass mean for tint in BC?
The glass type doesn’t change where film is allowed; the window’s position does. Film always goes on the inner glass face, so the interlayer is never touched.
For windshields, BC’s MVAR s. 7.05(8) keeps film to the band within 75 mm of the top. A full windshield, filmed from the inside, is available from $200 for customers who ask, once the shop has explained that it can’t be driven legally here: the usual fine is $109, and a Notice & Order can send the car for inspection with the film stripped. Laminated side glass follows the side-window rule: none of any shade on the front doors, clear included, and any darkness behind the driver.
Where laminated glass sits on your car decides the rest. Tinting acoustic laminated side glass covers door glass, windshield tint covers the front pane, and what film does when someone smashes a window compares both glass types under attack.