Finding Square Footage Of A Roof

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Finding square footage of a roof.

The calculator cannot account for complex shapes based on a measurement of square footage alone. Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square. 1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. Then add 10 to the number to account for waste.

Calculate square footage for a roof by measuring and by performing some basic math equations. Multiply the footprint square footage by the multiplier for your roof pitch to find the actual square footage of the roof. Next find the square footage of the metal roofing panels you want to use. With the area measurement you can learn the approximate cost of a new roof.

Use our roof pitch calculator to find the pitch of your roof. Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy. Measure the length and width in feet then multiply together to find the square footage. Multiply the square footage of your roof by 1 to get the 10 percent waste allowance.

Get the square footage of roof and divide it by 100 and it will give the number of squares you need and for every decimal number over 3 buy a bundle to achieve the amount of material. To conclude the example if your total roofing area is 17 300 square feet your waste allowance would be 17 300 x 1 1 730 square feet. How to calculate the roof area using the building square footage the pitch of the 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.

The total amount of roofing material you need is 17 300 1 730 19 030 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.