Image 1 12 to 12 12 roof pitch 7 12 pitch.
Roof pitch 12 8.
This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees.
Roof pitch degree table.
Pitch is thus the ratio of the rise in inches to a 12 inch run and is often expressed using a semicolon for example 6 12.
8 12 roof pitch 8 on 12 roof pitch 8 12 roof slope.
We included a roof pitch chart below the 7 12 example image and the calculator below that.
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.
8 12 roof pitch angle 33 69 degrees.
If a roof rises 8 in a length of 12 this is 8 12 roof pitch.
A roof with a 6 rise for every 12 run has a 6 per foot or 6 in 12 pitch.
Sometimes pitch is also expressed in fraction form using a fraction with a slash such as 6 12.
If this isn t practical then perform the same measurement on the underside of the roof.