To measure an obtuse angle which is normally the case for roof angles let ruler segment 1 follow the roof slope set segment 2 at 90 degrees to ruler segments 3 4 hold segments 3 4 level and re check that segment 1 still follows the roof slope.
How to measure the roof from the ground.
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.
Take the following steps to measure your roof from the ground.
Research other methods for measuring a roof from the ground online or talk to a roofing contractor.
Go all the way around your house and fill in your outline with your measurements making sure to account for overhang.
Stretch your tape measure along the walls from end to end.
Make a outline of your roof on paper.
Use a pitch.
Section off your roof and write your calculations down as shown below dotted lines.
As a tip if you.
Thus in a simple style house you ll only have to click on the corners.
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.
To find the pitch of your roof you ll first.
If you were to click on the peaks it wouldn t give you an accurate reading of your measurement.
Walk away from your house perpendicular to the wall that is under the roof pitch you d like to measure.
In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches.
Find the length and width of the building s exterior walls.
Outside of the u s a degree angle is typically used.
For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.
To sum it up each individual tab on a 3 tab shingle measures approximately 12 wide by 6 high.
Measuring your roof from the ground 1.
The pitch is the steepness of the roof.
Measure the distance from where you re standing to the face of the wall you walked away from.
Use a simple formula to approximate the square footage of triangular areas where two sections of a roof meet at each.