Determine its angle through taking a 12 inch level and.
2 roof pitch in degrees.
Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof.
To see what the degree equivalents are for standard rise in run roof pitches see our page quick reference.
Roof angles and rafter plumb cuts.
Enter base length to calculate rise and diagonal for current pitch angle.
The rise will be equal to the amount of the incline within the given distance or the run that.
Set bevel gauge directly from phone or tablet screen.
Locate its tangent or tan and follow the left row for you to read its corresponding degree.
Divide its rise by run in.
A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof.
This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees.
To use this method there are 3 possible places to take your measurements.
Directly measure roof pitch angle and calculate pitch and angle on phone or tablet.
Roof slope expressed as rise.
Roof pitch angle in degrees.
Pitch tan angle where angle is the roof pitch expressed in degrees.
This method tends to be more accurate because no layers of roofing are involved.
The measurements are taken from the bottom of the rafters the procedure to calculate roof pitch is the same.
If you want to find the roof pitch in the form of x 12 simply calculate the pitch and substitute 12 for the run length.
Definitions vary on when a roof is considered pitched.
How roof pitch manifests itself in various roof types.
Visit this page on your phone to directly measure pitch and angles.
The underside of a barge rafter on a gable end.
The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7.
In degrees 10 2 in 12 or 1 in 6 is considered a minimum.
Identify the rise and run.
Other than the 45 roof slope which is 12 in 12 none of the standard roof pitches 5 in 12 6 in 12 etc are equal to a whole degree.
This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.
The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72.
12 pitch 45 degrees 11 pitch 42 5 degrees 10 pitch 40 degrees 9 pitch 37 degrees 8 pitch 33 75 degrees 7 pitch 30 5 degrees 6 pitch 26 5 degrees 5 pitch 22 5 degrees 4 pitch 18 5 degrees 3 pitch 14 degrees 2 pitch 9 5 degrees 1 pitch 4 5 degrees 0 pitch 0 degrees.
On blue prints architects engineers usually display the pitch of a roof in the format shown on the image where number 4 represents a rise and number 12 represents a length.
The value displayed as the rise will be your x.
Select inches to enter decimal inches or millimeters for metric.
