Lowes sells an item I think known as 'florida glass' it can be a clear vinyl with display screen product imbedded, and it really is water resistant. I set up some panels in an area the place we were being continually finding rain and irrigation h2o, which solved the issue. https://solar-energy-companies-ct09764.blazingblog.com/34707760/the-2-minute-rule-for-solar-panels-in-ct-cost