I have NOT done it, but have examined this at my installer, who does a great job. That said, there is NO WAY you'll be able to wear polarized glasses without seeing banding or rainbows. I've looked though pretty much every tint and brand and they ALL caused banding unfortunately.
As for UV and heat, oddly enough yes, it does reduce the heat from UV. BUT...I don't know of a single windshield that isn't safety laminated; and that lamination also is a UV blocker. For that matter, all windows contain a UV blocker of some sort. So, why bother tinting ANY window?? Makes you wonder we get MORE heat reduction off of the darker films used on side windows? After all, "supposedly", the heat comes from UV, but obviously this isn't true...it also is transmitted through visible light as well as CONDUCTED heat. That's why these tints work; they reflect that radiated heat away from the glass, making it cooler. This is easily insider ed with the touch test.
So...THAT is a major problem since you'd have to have a reflective tint to repel that energy...and for the windshield...that is totally unacceptable in my opinion.
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