I don't recall year, but when we built my sister and BIL house, he paid A LOT extra and we put 50 year shingles on. Part of their house is A frame. believe me when i say i hated it. My dad and i were on one side, working off roof jacks for a loooooooooong time. when others took breaks, my dad was a work horse, no breaks. Anyhow, shingles lasted like 20 years. they ended up suing to recoup some of the money.