There are two main categories of roofing.
Slope of 5 12 roof pitch.
Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run.
5 12 roof pitch equivalents roof rises 5 in a length of 12.
A 4 12 is a roof slope that rises by 4 inches for every 12 inches across.
Simply locate a roof rafter board place the end of the level against the bottom edge and measure from the 12 inch mark vertically to the bottom edge of the rafter.
5 12 roof pitch to angle 22 62 degrees also referred to as 5 12 roof slope 5 on 12 5 to 12 and 5 12 roof angle.
This forms an angle of 18 5 between the horizontal section and the roof and creates a gentle incline that is seen as a midpoint between a low pitch and medium pitch roof.
The table below shows common roof pitches and the equivalent grade degrees and radians for each.
For example if you measure 4 inches the pitch of your roof is 4 12.
A low slope roof is anywhere from 2 in 12 to 4 in 12.
The run always remains constant at 12 inches.
The combination of two numbers are used to display or show the roof pitch.
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.
Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof.
Roof slope style.
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.
That is the roof s rise.
Roof pitch is a term describing how steep or flat your roof slope is.
This will give you the rise over run or pitch.
In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches.
5 12 roof pitch angle 22 62 degrees.
What is a 4 12 roof pitch.
Conventional slope roof range between 4 in 12 and 8 in 12.
It is often compared to slope but is not exactly the same.
A flat roof has a slope of 2 in 12 or less.