## Satellite Reports: Fast, Accurate Roof Measurements Reports

In most cases, satellite and aerial roof measurement technology is 99% accurate, if you follow a few simple rules. Achieving accurate roof measurements manually isn’t any different. A manual roof takeoff by one roofer can easily vary from that of another.
Just measure the length and width of each plane on the roof, including dormers. Then, multiply length x width to get the square footage of each plane. Simply add the square footage of each of the planes together to derive the total square footage of your roof.
To estimate roofing materials, start by finding the total square footage of the roof and divide the number by 100 to determine the number of “squares” in the roof. Since it takes 3 bundles of shingles to cover a square, plan to purchase 3 bundles for each square. Then, add 10% to the number to account for waste. For a 1500 square foot house, you will need approximately 19 squares or 57 bundles or 1653 pieces of 3-tab standard-sized shingles (12 inch by 36 inch) when overhangs is 1 feet and roof slope is 4/12.
For the number of ridge caps, multiply the length of the hip or ridge by twelve and divide it by five. This house is 1000 square feet. It requires 18 squares of shingles.
The more architectural details your roof has, the more planes you will have to measure. Measure each plane.Find the length and width of each plane.Then, multiply those two numbers together to find the square footage of that plane.

They generally range between \$55 on the low end and \$600 on the high end, with an average of \$100 to \$250 per square of architectural shingles.

Roof Shingles Cost per Square.

Number of SquaresCost (Including labor)
12 squares\$2,400 – \$6,000
15 squares\$3,000 – \$7,500
17 squares\$3,400 – \$8,500

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