UV exposure from the sun is a concern for everyone whether we’re tanning at the beach or driving down the road. The sun’s radiation is actually divided into three different categories – UVA, UVB, and UVC – each having a different effect on our bodies. The third type, UVC, is not a concern because Earth’s ozone layer prevents it from entering our atmosphere, so that leaves us with UVA and UVB.
Both UVA and UVB accelerate aging of the skin and destroy vitamin A in skin. They are also responsible for DNA damage and are known carcinogens, so minimizing exposure to the sun in every way possible is important is important for healthy skin.
Window tint is often used to block the vast majority of the sun’s UV rays, but since windshields can’t be tinted below the AS1 line just a few inches from the top of the glass we’re left with the following question – does my windshield itself provide any protection from the sun? The answer to that question is yes!
Windshields are anything but standard glass; they are assembled by laminating two layers of glass together with a middle layer of thermoplastic (like TPU, PVB, or EVA) called the interlayer, and this is where our focus will be. While side and rear windows of most vehicles do slightly reduce exposure from UVB, they are normally just a single sheet of tempered glass with no laminate layer and will not block significant amounts of UVA. Windshields, on the other hand, are able to filter out most UVB and UVA rays due to the vinyl interlayer which is treated with UV inhibitors.
The modern windshield serves many purposes aside from protect you from the weather. They provide structural support for the vehicle and are vital for passenger airbag deployment, they are even a platform for technology in the form of self-cleaning systems and HUD systems, and on top of all that they block the majority of harmful UVA and UVB radiation. This is not only great for your skin, but also prevents damage to the interior from direct sunlight.
Remember, if your windshield is ever chipped or more seriously damaged, DeDona Auto Glass is standing by to assist you with professional installation backed by guaranteed workmanship. Give us a call today at (336) 851-1380 or simply request a quote online!