Some Like It Dot: Windshield Markings Explained
If you’ve ever been sitting in Tucson traffic, bored out of your mind, you may have noticed all those little dots around the fringes of your windshield. You may have even wondered what those windshield markings are even FOR. You’re not the only one. Jalopnik’s David Tracy thought the same thing, so he did some digging and found what we in the glass industry already knew: they’re more than just decoration
Rick told me that the black band around the edge of the glass is called “frit,” a baked-in ceramic paint that’s essentially impossible to scrape off.
Frit, which is a permanent part of the windshield, performs a number of jobs. Possibly most importantly (especially here in Tucson), it helps to dissipate UV sunrays from causing deterioration to the urethane sealant. This sealant is vital and seals the unit and prevents rain/debris from entering the cabin, but also holds the windshield in place.
There are other purposes to the ‘frit’, like helping to dissipate heat during the glass curing process. The more you know the better off you are!
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