Roof pitch is represented in inches rise of 12 inches run.
What does 12 12 roof pitch mean.
The second number is the horizontal area measured usually measured as a standard 12 inches one foot of roof.
12 12 roof pitch equivalents roof rises 12 in a length of 12.
12 12 roof pitch 45 degrees 12 12 roof pitch to angle 45 00 degrees also referred to as 12 12 roof slope 12 on 12 12 to 12 and 12 12 roof angle.
In the united states roof pitch is typically measured in inches and expressed as a ratio.
The first is from the top of the roof.
12 12 pitch means 12 inches out then 12 inches up.
This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.
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.
An example of a roof pitch would be a 6 12 pitch which means that the roof rises 6 for every 12 inward towards the peak or ridge.
The higher the first number rise in the ratio the steeper the roof.
Roof pitch or slope tells you how many inches the roof rises for every 12 inches in depth.
To figure the pitch of a roof you.
12 12 roof pitch angle 45 00 degrees.
The resulting angle would be 45 degrees.
Here is a site that may help.