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.
New Roof Costs. 1  An asphalt shingle roof starts at $2 to $4 per square foot installed and might cost as much as $5 to $8 per square foot installed. 2  On a 1,500 square foot roof, that's a total estimated cost of $3,000 to $12,000. Wood shingles cost $6 to $9 per square foot installed ($9,000 to $13,500). 2  Galvanized steel is one of the most popular metal roof options and costs $9 to $13 per square foot installed ($13,500 to $19,500).