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How do i figure out square footage of a roof.
In cases where a roof has a complex shape such as in the image to the right measuring the dimensions and areas of each part of the roof to calculate total area will result in a more accurate measurement of area.
Before you do any roofing work you must calculate the roof s square footage to determine how much material you need.
The calculator cannot account for complex shapes based on a measurement of square footage alone.
1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square.
Calculate square footage for a roof by measuring and by performing some basic math equations.
Shingles and other roofing materials such as underlayment are typically measured in squares that are 10 feet long and 10 feet wide with each square measuring 100 square feet.
If your roof is flat or has no more than a 3 in 12 pitch you can calculate its total square footage by simply multiplying the length by the width.
Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy.