Use a simple formula to approximate the square footage of triangular areas where two sections of a roof meet at each.
Measuring roof pitch from the ground.
For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally.
To sum it up each individual tab on a 3 tab shingle measures approximately 12 wide by 6 high.
Calculate the pitch of the roof.
Determine your roof pitch see roofpitch if you need help.
Research other methods for measuring a roof from the ground online or talk to a roofing contractor.
Find the length and width of the building s exterior walls.
Use a pitch.
For a roof with the ridge above one wall the span is the same as the run.
Take the following steps to measure your roof from the ground.
Go all the way around your house and fill in your outline with your measurements making sure to account for overhang.
Locate the level s 12 inch mark.
For example a 3 pitch or 3 in 12 pitch or 3 12 pitch all mean that the roof rises 3 inches for every 12 inches of it s horizontal run.
For more complex roofs you may need to calculate it section by.
Measure the height from the ground to the.
Stretch your tape measure along the walls from end to end.
Access one of the rafters then take the measurement this way.
As a tip if you.
Use a level against the underside of the rafter you re measuring to get the most accurate value.
Measuring your roof from the ground 1.
The pitch is the steepness of the 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.
Roof pitch is represented in inches rise of 12 inches run.
Make a outline of your roof on paper.
Walk away from your house perpendicular to the wall that is under the roof pitch you d like to measure.
Measure the distance from where you re standing to the face of the wall you walked away from.
To find the pitch of your roof you ll first.