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.
So how long should a roof last? We have seen poorly designed and installed roofs go as few as seven to ten years before they failed, and we have seen old asphalt roofs that were over 30 years old. Most building owners, roofing contractors and designers feel 25 years is an acceptable service life for todayâs products.