Make a outline of your roof on paper.
How to measure roofs from ground.
Use a simple formula to approximate the square footage of triangular areas where two sections of a roof meet at each.
Stretch your tape measure along the walls from end to end.
Research other methods for measuring a roof from the ground online or talk to a roofing contractor.
So if you divide your answer of a product of length times height by two you will get the area of a triangle.
Then count the number of shingles to the peak of the roof.
Multiple the number of shingles times the width of each shingle which you can measure at ground level to get b in the figure below.
Measuring your roof from the ground 1.
Take the following steps to measure your roof from the ground.
Determine your roof pitch see roofpitch if you need help.
Measure the horizontal run of the roof surface from the ground a in the third figure below.
L h 2 area calculating an area of a triangle when estimating a roof.
The first technique is referred to as the shingle count method which is used for estimating the measurements of all rectangular shaped sections of a roof.
1 roof square 100 square feet.
Calculate the pitch of the roof.
To find the pitch of your roof you ll first.
The pitch is the steepness of the roof.
Section off your roof and write your calculations down as shown below dotted lines.
The length l times the height h of a triangle is twice its area a2.
Find the length and width of the building s exterior walls.