Roof Square Footage Formula

However shingles are packaged in a way that they are light enough for the average person to carry around.

Roof square footage formula.

Because each 100 square feet of roof is one roofing square divide the total area from step 1 by 100. The answer is the number of roofing squares for the roof. Convert the area to roofing squares. As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles.

For example if your roof s pitch is 4 in 12 you would divide 4 by 12. The only difference in this calculation to the one for a gable roof area is the amount of the ridge. So continuing our example if you ve got a two story house with a total square footage of 2 700 square feet with each floor having. A square of shingles is the number of shingles needed to cover 100 sq feet of roof area.

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. The square footage of a hip roof area is identical to the square footage of a gable roof of the same size. The first step in a free roofing estimate is measuring the roof dimensions.

If your roof is 2 000 sq. Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy. This is pretty simple. Multiply this number by your most recent result to get the estimated square footage of your roof.

Multiply by the square footage of a single floor of your house. You will need to express this size in terms of square feet. Roofing square conversion calculator now it s time to convert square feet into roofing squares. Divide any irregularly shaped areas of the roof into more manageable triangles and rectangles then calculate square footage for those individual elements and add them to get the total square footage.

For example take an area made up of a triangle that s 20 feet high and has a base of 40 feet plus a square that s 40 feet by 40 feet. This would yield 1 3 next square your result. Feet then you will have 20 squares. 2 000 100 20.

1 300 x 1 05 1 365 square feet calculating the area true if you want to get the exact area measurement for your roof you can follow these steps. Once you have your roof s pitch divide the number by 12.