8 inches and you have an 8 in 12 pitch.
How to measure flat roofs squares.
The easiest way to measure this section is to divide it up into three different sections.
Pitch measurement method 1 1.
As you can see s1 and s3 are the same size but you still need to document all measurement points to verify your material calculation accuracy.
You will need to express this size in terms of square feet.
To convert the square footage to roof squares divide the square footage by 100.
If this distance measures 4 inches you have a 4 in 12 pitch.
For example if your home is 60 feet long and 40 feet wide you would multiply the length by the width and come up with 2 400 square feet.
Thus in a simple style house you ll only have to click on the corners.
On a ladder beside the roof place the level a foot or so up the roof hold it level and measure from the 12 inch mark on the level s bottom straight down to the roof.
Make a note of the square footage of each square or rectangular section on your diagram.
The roof surface area would be 24.
Outline the roof at the points that are on the same level or elevation to ensure that you re getting an accurate calculation of your roofing measurements.
The first step in a free roofing estimate is measuring the roof dimensions.
If you were to click on the peaks it wouldn t give you an accurate reading of your measurement.
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.
Just multiply the length and width dimensions.
Since s2 is now a rectangle simple l x w is all that is required.
Make sure to document the number of chimneys skylights or other obstructions and include dormers in your measurements.
If a section is 120 feet 37 m x 100 feet 30 m its total square footage would be 12 000 square feet 1 100 m 2.
Be sure to find the area of any dormers on your roof as well.