Would LEXAN etc. degrade if a layer of glass was on the sun side?
https://www.acplasticsinc.com/informationcenter/r/what-is-lexan
It’s the UV rays that effect Lexan and other petroleum plastics.
UV protection glass, sorta like polarized, but different could provide the protection needed.
For a difference inuv vs polarized here’s some explanation.
http://fashioneyecenter.com/polarized-sunglasses/
Think of UV as wavelength and polarization as a rotational angle of attack...sorta.
Plexiglass, which is acrylic vs petroleum based, may be a better alternative.
https://www.theclassroom.com/effects-of-the-sun-on-plexiglass-12080213.html