Most panels are actually much tougher against hail than many roofing systems on their own. Adding plexi on top would decrease efficacy.
Discussion
Yeah I don’t know how they construct them these days food for thought
The glass is better than ever, even on the cheap panels. Mine survived a hail storm that took out hundreds of roofs in the area.
How much was it for the whole system installed?
I'm in an RV trailer, so... It's all DIY.
Rates for installs vary greatly. Usually a minimum of $12k for a very minimal system installed, but...
That's on an existing roof that's structurally sound.