1 Literacy rate, adult female (% of females ages 15 and above) 2  Literacy rate, adult male (% of males ages 15 and above) 3  Literacy rate, youth female (% of females ages 15-24)  Literacy rate, youth male (% of males ages 15-24)
Asphalt shingles- 30 yrs. (only about 15 yrs. of life, though). Tin- 50-100 yrs. You do the math. Tin is way more expensive, but usually works out to save you over the life of the roof (longer than yours). For Canadian weather, I'd strongly recommend the tin as it sheds snow/rain better. Oh, I'm thinking NW Canada, not sure where you live, but still, tin is the better material all the way around.
Photo Courtesy of Metal Sales Manufacturing Corporation. While more expensive than asphalt, metal roofing lasts longer and is more wind resistant. 1  Materials: May be composed of steel, aluminum, copper, or zinc alloy. 2  Steel roofs come with either a zinc coating or painted finish. 3  Copper roofs are installed unfinished and acquire a protective green patina with age.