.....I'm not sure which forum to put this in, so apologies in advance to the mods if this posting has to be moved elsewhere.....
On my studio building, we've decided to completely remove the existing roof including decking and construct brand-new trusses to replace everything because the current wood-portions of the structure are beyond repair. The cinderblock walls will be repointed and the ground level window openings will be bricked shut for both sound-transmission and security reasons.
Due to both my fire insurance as well as local building codes, a "Class A" flame spread rated material must be used when replacing the roof. The building inspector suggested "stone coated steel shingles" instead of asphalt because they are less than half of the weight of conventional fiberglass-backed asphalt shingles and do not require a plywood or OSB sub-roof deck, further reducing the weight load on the structure.
Does anyone here have any experience with stone coated roofing? Opinions - good/bad?
Thanks in advance.
Manufacturer's website - http://www.allmet.com