We purchased these shingles for our home/business. This is my experience and opinion of this product. We used the AR shingles on three of our buildings. They are beautiful and worked in really well with our cabin theme. We had them put on by a professional. After 5 years they were literally falling apart on all buildings. We called Owens and Corning because they have a supposed gaurentee. They refused to do anything about it. So, a gaurentee is only as good as the company. It's really a shame because the shingles were really beautiful. I will never knowingly buy anything with the name of Owens and Corning name attached. They did not stand behind their product. It's a name I will never trust again.