How To Find Out Square Footage Of A Roof

Because each 100 square feet of roof is one roofing square divide.

How to find out square footage of a roof.

To find the squares divide the overall roof area by 100 and then round up. A x b 120 x 100 12 000 sq. Multiply the length by the width to arrive at. 1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square.

The calculator cannot account for complex shapes based on a measurement of square footage alone. Measure your house at ground level then add in the roof s overhang for greater accuracy. As an example if your overhang is 12 inches you ll add 2 feet to the overall length and 2 feet to the overall width of the house. How do you calculate square footage for a roof.

Each time you add points the area will update and there is a box below that will convert this into acres meters kilometers miles and finally square feet. After you ve done this you can click along the outer edge of the roof that you wish to calculate the area for. Multiply length a times width b. This nominal square footage amount is then multiplied by a factor associated with the roof s pitch.

The first step in a free roofing estimate is measuring the roof dimensions. A square simply refers to a 10 x 10 square of roofing. For instance if the roof is 1550 square feet then it is 16 squares. 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.

Convert the area to roofing squares. For example this shed roof has one roof plane. This is simply 100 square feet of roof. The result is the total square footage of your roof.

Roof pitches in degrees. You will need to express this size in terms of square feet. If for example the total square footage for the examples used so far would be 14 400 the rectangular plane plus 900 the triangle plus 2 000 the irregular shape 17 300 square feet. Add the square footage for all the planes together.

Measure the ground dimensions of the house using a tape measure and write down these dimensions. 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. 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.