PornMD released its search statistics for pornography and broke down the most popular search terms by country and state. For example, the most searched term in California is Asian while the most popular search term in Finland is mature and granny. Different strokes!
That said, hereâs a list of the average roof lifespan per type of roofing material: 1  Asphalt Shingles â 15-30 years. 2  Wood Shakes â 30-50 years, when maintained. 3  Metal Roofs â 50+ years.  Tile Roofing â 50+ 1  years. Natural Stone â 50+, when maintained.  Synthetic Roofs â 30-50+, depending on material.
Typically, a wood shingle roof will last 20 to 40 years. Natural slate is a roofing material that consists of shingle-like slivers of rock. The quality of the rock, its thickness, and density, all affect life expectancy. A slate roof can last from 45 to several hundred years.