Roof pitch and corresponding angles.
Pitch of roof in degrees.
This drawing demonstrates how many degrees rise for each pitch of a typical roof.
Steeper slopes increase the sail effect that makes them susceptible to wind.
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.
This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.
Look at the column labeled pitch then look under degrees to get the corresponding amount of degrees.
The 30 degree 7 12 roof recommendation is backed up by testing according to the publication science daily.
8 12 pitch 33 75 degrees.
Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio.
To do this simply convert the rise and run as a fraction to a decimal form eg.
This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 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.
If you want to know how to find the pitch of a roof then start with a calculator.
With the use of this converter it will be easier for you to locate a 30 degree roof pitch 20 degree roof pitch 25 degree roof pitch or a 15 degree roof pitch.
Last updated july 10 2020 the following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72.
It always makes sense to the standard roof pitch angle spot on as the benefits of doing so are quite obvious.
To find the angle of a roof in degrees convert the pitch to a slope then convert to degrees by finding the arc tangent of the slope.
Roof slope calculator example of use.
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.
First convert the pitch to a slope.
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.
Rise run rise run slope.
To see roof pitch visual examples.
However if you to do the process using your own knowledge you can still convert pitch to degrees by dividing the rise and run and get its corresponding measurement.
Lower slopes don t handle wind driven rain as well.
The value displayed as the rise will be your x.
Pitch tan angle use this when you express the angle of the roof pitch in degrees what is the standard pitch of a roof.
