1 A Virginia homeowner did all the prep work himself and paid roughly $2,500 for 1,560 square feet. 2  Total costs for a do-it-yourself brick patio can run $2.80 a square foot or $560 for a 10x20-foot area, according to AskTheBuilder.com.ontractor: Local. The contractor removed old concrete and trees in the 440 sqft patio, then installed the brick pavers (for 330 sqft), constructed garden walls (1 ft high), and a small brick step to the doorwall. The removal cost is about $900, and the remaining $2,650 is the cost for paver, garden walls and a step.
A few tips: To figure the size of your roof, see our square footage calculator. In roofing terminology, a square is 100 square feet. Composition shingles (asphalt or fiberglass) come in bundles that cover 1/3 square. Roofing comes in rolls 3 feet wide and 36 feet long, for a coverage of about 1 square. When installing roofing over bare wood, roofing felt -- often called tar paper -- is laid down first. A roll of 15-pound felt covers about 4 squares; a roll of thicker 30-pound felt covers 2 squares.
Multiply by the square footage of a single floor of your house. So continuing our example, if you've got a two story house with a total square footage of 2,700 square feet, with each floor having 1,350 square feet, multiply 1,350 by 1.0541 to get 1,423 square feet. So you'd need 1,423 square feet of roofing.oof pitch is given as the number of inches in height change over the distance of one foot. Dividing by 12 gives the ratio of inches in rise per distance. For example, a standard roof pitch is likely to be about 4.