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