How To Figure Out Square Feet Of A Roof

In this overhead view you see both a hip end section and gable ends.

How to figure out square feet of a roof.

Roofing materials are typically packaged in squares each of which is the equivalent of 100 square feet 9 3 m 2 of roof space. 1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. For a 12 000 sq ft 1 100 m 2 roof you ll need a minimum of 120 squares. Include dormers the small outjuttings over attic windows.

With a more complex roof such is this one it is highly recommended that you make a basic sketch. How to calculate square feet of a roof. Multiply the length and width of each square or rectangle shaped plane. Measure the length and width of every roof plane or surface.

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. 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. A square simply refers to a 10 x 10 square of roofing. To find the squares divide the overall roof area by 100 and then round up.

You will need to express this size in terms of square feet. The calculator cannot account for complex shapes based on a measurement of square footage alone. Calculate each plane separately. Dividing the total area of your roof by 100 will therefore help you figure out how many squares worth of shingles to order.

This is simply 100 square feet of roof. If the house has an irregular shape measure each part separately figure the separate areas and add them together. 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. Convert the area to roofing squares.

Because each 100 square feet of roof is one. 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. L 30 feet h 12 feet 30 12 2 180 square feet. The first step in a free roofing estimate is measuring the roof dimensions.