Solar shingles might be wonderful ...someday ...in Arizona, but I wouldn't even consider them in any climate subject to winter conditions. We have never had a single leak on any of our installs and I think that is both because 1) we won't cut corners on an install, and 2) because we design everything for December. As everyone on the lake knows you can't argue with Mother Nature and you can't stop the ice from tearing things up if you don't plan for it.
My favorite roof installation is rail less on a standing seam roof, no penetrations, snow slides right off, the critters can't get under the modules, and they look absolutely fabulous. The photo is one we did in Alexandria a few years ago
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