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.
According to our concrete slab material estimator, the average minimum cost per square foot of a concrete slab is $1.36 and the maximum is $1.88.By comparison, the price per square foot for a cement slab is $5.50.Just know that even if you do not hire a pro, there are additional costs that come with all concrete slab projects. Supplies, such as the wood used to shape the concrete, can add $3.75 per square foot.n the likelihood that you do hire a pro, installation costs for a concrete slab average $65.50 per hour. If you have a poor foundation or are working on a slope, the overall cost can go up.