How To Find Square Footage Of A Roof

Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square.

How to find square footage of a roof.

Use only the square footage directly covered by the roof. 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. Calculate square footage for a roof by measuring and by performing some basic math equations. The first step in a free roofing estimate is measuring the roof dimensions.

1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. When calculating square footage for your roof always add at least 10 percent of the total to account for waste. 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. Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy.

On a multistory house use only the square footage of a single floor. 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. The calculator cannot account for complex shapes based on a measurement of square footage alone. Minor differences in calculations occur based on chimneys and other.

Keep in mind that the average size of a roof is 1 700 square feet so your total will likely be 10 higher or lower than this figure. Then add 10 to the number to account for waste. You will need to express this size in terms of square feet. With the area measurement you can learn the approximate cost of a new roof.