How To Measure Roofs From Ground

The length l times the height h of a triangle is twice its area a2.

How to measure roofs from ground. The pitch is the steepness of the roof. Go all the way around your house and fill in your outline with your measurements making sure to account for overhang. 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.

Determine your roof pitch see roofpitch if you need help. Make a outline of your roof on paper. Use a simple formula to approximate the square footage of triangular areas where two sections of a roof meet at each. 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.

L h 2 area calculating an area of a triangle when estimating a roof. Find the length and width of the building s exterior walls. 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. Measure the horizontal run of the roof surface from the ground a in the third figure below.

Then count the number of shingles to the peak of the roof. Calculate the pitch of the roof. Measuring your roof from the ground 1. To sum it up each individual tab on a 3 tab shingle measures approximately 12 wide by 6 high.

Section off your roof and write your calculations down as shown below dotted lines. Use a pitch. Stretch your tape measure along the walls from end to end.