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.
Tile Roof Average Costs. 1  Ceramic roof tile costs starts at approximately $5 to $15 per square foot but could cost as much as $15 to $30 per square foot or more. For a 2,000 square foot roof, this amounts to a total cost of around $10,000 to $60,000. Concrete roof tile costs are generally around $5 to $10 per square foot, or $10,000 to $20,000 for a 2,000 square foot roof. Tile is a heavy material, and it is sometimes necessary to upgrade a home's structural support to accommodate the added weight of a tile roof. If this is the case, it might tack on as much as $10,000 or more to the project.