Instead of being smooth and nearly featureless like a kidney or spleen, the cerebral cortex (the thin layer of gray matter forming the outer surface of the brain) is chock-full of wrinkles and folds.Click on the image above for a larger view.nstead of being smooth and nearly featureless like a kidney or spleen, the cerebral cortex (the thin layer of gray matter forming the outer surface of the brain) is chock-full of wrinkles and folds.
Depending on the type of your roof, geographic location, and the company or weekend warrior you choose to hire, the total installed cost of a composition shingles roof could vary between $2.75 to $7.50 per square foot installed.
Average Cost Per Square. While the cost of concrete roof tiles varies by region, manufacturer or other factors, you can expect to pay between $310 and $500 per square installed, according to a 2014 article on BobVila.com.This figure is roughly half the cost of clay roofing, which costs $700 to $1,000 per square.espite their higher upfront cost compared to standard asphalt shingles, concrete roof tiles may represent a better value over the long haul. Depending on the material you choose, asphalt shingles cost $150 to $300 per square as of 2014, according to BobVila.com.