Hi, we're in the process of making thinner block PC panels (3 inch thick) to cover the roof of our mobile home to help keep the sun from cooking us alive and tripling our electric bills (western arizona desert) and I need an inexpensive way to waterproof the panels. Since we do get some occasional t-storms during July/Aug with heavy downpours, without waterproofing they could absorb quite a bit of water which would add quite a bit of weight to our roof.
I checked the price of cool coating and it's a bit expensive. Any good suggestions? I was thinking of just coating the outsides of the panels but if there's something I can add to the mix so that the panels won't absorb rain water, that'd be even better.
Thanks!
Terry
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