A 4 12 is a roof slope that rises by 4 inches for every 12 inches across.
Slope of 5 12 roof pitch.
A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof.
A flat roof has a slope of 2 in 12 or less.
The combination of two numbers are used to display or show the 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.
Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run.
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.
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.
5 12 roof pitch equivalents roof rises 5 in a length of 12.
For example if you measure 4 inches the pitch of your roof is 4 12.
Roof pitch is a term describing how steep or flat your roof slope is.
There are two main categories of roofing.
What is a 4 12 roof pitch.
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.
A low slope roof is anywhere from 2 in 12 to 4 in 12.
The table below shows common roof pitches and the equivalent grade degrees and radians for each.
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.
Roof slope style.
The run always remains constant at 12 inches.
This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.
That is the roof s rise.
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.
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.
This will give you the rise over run or pitch.
Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof.
It is often compared to slope but is not exactly the same.