It will also give you the perimeter of the shape of the roof.
Measuring roof size.
How to calculate your roof square footage first measure the length and width of each surface on the roof then multiply these values to get the square footage of that surface.
Make sure to document the number of chimneys skylights or other obstructions and include dormers in your measurements.
Roof reports and wall reports made easy.
We ll use satellite imagery and trigonometry to calculate your roof s measurements.
1 roof square 100 square feet.
A 12 in 12 pitch is a steep 45 degree angle roof.
A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally.
L h 2 area calculating an area of a triangle when estimating a roof.
Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.
If its pitch is 6 in 12 a pitch multiplier of 1 12 multiplying 1 152 sq ft 107 0 m 2 by 1 12 would give you an overall square footage of 1 290 square feet 120 m 2.
See the image below for more explanation on rise run and pitch.
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.
So if you divide your answer of a product of length times height by two you will get the area of a triangle.