That’s a good question, I haven’t had it on long enough to know. Also I’ve been minimizing my wiper usage and trying to clean with a microfiber regularly. I don’t expect the film would last many years with regular wiper usage, luckily living in California I don’t need to use them often...
I used this brand but did the 8 mil universal kit (more work but there is no gap at the edges like the pre cut film). If you’ve installed PPF, this should be no problem, I PPF’ed my whole car and this film was easy to apply since the windshield is mostly flat. Only had it on since January so...