How To Figure Square Footage Of My Roof

How to calculate square feet of a roof step 1.

How to figure square footage of my roof. Calculate each plane separately. Include dormers the small outjuttings over attic. You can even embed this tool on a website that you own. To find the squares divide the overall roof area by 100 and then round up.

Measure the length and width of every roof plane or surface. A square simply refers to a 10 x 10 square of roofing. Find the square footage of the roof. This is simply 100 square feet of roof.

For instance if the roof is 1550 square feet then it is 16 squares. Convert the area to roofing squares. Because each 100 square feet of roof is one. 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.

Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy. If you have a simple gable roof you ll only need to measure and sum up the 2 planes of the roof. Measure the length and width of each portion of the roof multiply length by width for each plane and then add the planes together for the total square footage. 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 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. 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. It will also give you the square footage of your roof and any other areas that you re wanting to estimate.

Multiply the length and width of each square or rectangle shaped plane. It will also give you the perimeter of the shape of the roof. If the house has an irregular shape measure each part separately figure the separate areas and add them together.