Measuring Roof Size

We ll use satellite imagery and trigonometry to calculate your roof s measurements.

Measuring roof size.

L h 2 area calculating an area of a triangle when estimating a roof. The length l times the height h of a triangle is twice its area a2. 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.

So if you divide your answer of a product of length times height by two you will get the area of a triangle. Make sure to document the number of chimneys skylights or other obstructions and include dormers in your measurements. 1 roof square 100 square feet. Roof reports and wall reports made easy.

It will also give you the perimeter of the shape of the roof. 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. See the image below for more explanation on rise run and pitch.

After you ve done this you can click along the outer edge of the roof that you wish to calculate the area for.