Steeper slopes increase the sail effect that makes them susceptible to wind.
2 degree pitch roof.
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.
Pitch tan angle where angle is the roof pitch expressed in degrees.
Enter run the flat level length then click pitch angle or rise to select then enter other known dimension angle or pitch.
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.
These roofs have a pitch less than 4 12.
You have to pay higher cost for steeper pitch.
Roof pitch defined and explained.
The table below shows common roof pitches and the equivalent grade degrees and radians for each.
The triangle diagram will be re drawn to scale with all dimensions marked.
The value displayed as the rise will be your x.
The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12.
This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees.
8 12 pitch 33 75 degrees.
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.
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 30 degree 7 12 roof recommendation is backed up by testing according to the publication science daily.
This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.
A 30 degree roof slope 7 12 pitch is the right pitch to aerodynamically handle high wind.
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.
Drag sliders to animate the results and diagram.
Measurement of your house roof pitch is one of the most important things while constructing pitched roof.
To see roof pitch visual examples how to determine pitch.
Generally such roofs have a pitch ranging from 1 2 12 to 2 12.
Pitch is the term used to describe the angle slope or slant of your roof.
Or the colon can replace the slash as in 2 12 or 7 12.
Lower slopes don t handle wind driven rain as well.
Low pitched roofs are generally difficult to maintain and you need special materials to prevent leaks.