We got our metal roof installed by a residential roofing service ( http://www.rooflines.com/
) three years ago. Recently I found moss growth on my roof. Our roof is too high, so it'll be risky to clean them by ourselves. I'm not sure whether we can clean them, but it'll be helpful if you suggest few ideas to prevent their growth. It's in the starting stage, so how can we prevent them from covering the whole roof??