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.
Benefits of Metal Roofing. Metal Roofs Last Much Longer. A metal roof lasts up to 50 years or more, far longer than the average lifespan of non-metal roofs (17 years) and asphalt roofs (10 to 20 years). More Energy Efficient. A metal roof can save 25% in energy costs compared to an asphalt roof. Metal roofing panels reflect solar radiation far more efficiently than traditional roofing materials, which absorb and retain more heat. Because of this energy efficiency, your metal roof may qualify for tax incentives.