1 Confirm that the metal roof you select is a painted or coated Energy Star-labeled metal roof and obtain certification from your contractor or the manufacturer.  Have the metal roof installed between January 1, 2009 and December 31, 2010.
1 A plain concrete walkway costs $4 to $6 per square foot. 2  Adding a single color or simple finish to the concrete raises the price to $6 to $10 per square foot. Expect to pay $8 to $12 per square foot for multiple colors or more elaborate patterning such as stamping or engraving. 2  Fully-custom walkways with a high level of hand-applied details (such as chemical stains or stenciling) cost $12 to $15 and up.
What is The Average Cost of Concrete Slabs Per Square Foot. The cost of concrete slabs will vary depending upon the size and depth of the slab as well as other factors. The average cost of a concrete slab will be between $5 and $7 dollars per square foot or $135 and $189 per cubic yard. Once the slab size is determined, then it is time to calculate the amount of concrete that will be needed. Concrete is sold per cubic yard which is 27 square feet.