The calculator cannot account for complex shapes based on a measurement of square footage alone.
Figure squares shingles roof.
The area calculator can be used to calculate the area of a variety of simple shapes that together can comprise the area of the roof.
A low slope roof is anywhere from 2 in 12 to 4 in 12.
Conventional slope roof range between 4 in 12 and 8 in 12.
A flat roof has a slope of 2 in 12 or less.
There are two main categories of roofing.
As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles.
1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square.
The answer is the number of roofing squares for the roof.
Using the aggregate area of these simple shapes can yield a more accurate roof area to be used with the roofing.
Roof slope style.
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.
Because each 100 square feet of roof is one roofing square divide the total area from step 1 by 100.
However shingles are packaged in a way that they are light enough for the average person to carry around.
The run always remains constant at 12 inches.
To calculate the size of the roof you need to measure the size of the roof as if it were flat account for roof pitch calculate square footage and finally determine how many squares of material are required for the roof the calculator above can handle all of this simply enter the length width and pitch and it will determine the size of the roof in squares.