fiberglass vs polycarbonate roof panels

https://fiberglassshinglestips.summitquill.com/posts/why-fiberglass-shingles-are-a-smart-choice-for-patio-covers-and-carports

When choosing between fiberglass and polycarbonate roof panels, the main trade-off is durability versus light transmission. Fiberglass panels are heavier and more rigid, offering better impact resistance but they can yellow and become brittle over time with prolonged sun exposure. Polycarbonate panels, on the other hand, are lighter, more flexible, and virtually unbreakable, with superior UV resistance—though they're more prone to scratching and cost a bit more upfront.