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.
1 A metal roof is lightweight, durable, fire-resistant and does not rot. 2  A professionally installed steel roof can be $5,100-$22,000 for steel roofing on a simple one-story ranch-style house; aluminum runs $11,900-$24,200 for the same roof; and copper jumps to $25,500-$39,600. Wood shingles or shakes are beautiful but require ongoing maintenance, can be prone to fires and don't last as long as other roofing materials. 2  Installing natural wood shingles or shakes on an average one-story, ranch-style home (1,700-2,100 square feet of gently sloping roof) costs around $6,800-$20,000 or more.