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.
Plus, metal roofing sheets install quickly and easily. The incredible longevity of metal roofing materials makes them an attractive option. Despite the benefits, the cost is significantly higher for metal roofing systems, but there are a few drawbacks to aluminum and steel roofing: a higher noise level and the risk of getting dents that may affect the overall look.