There is no standard universal roof pitch.
Roof pitch 1 12.
If a roof increases in height by four inches for every foot of horizontal run it is considered to have a 4 in 12 pitch or just a 4 pitch talk in terms of pitches and you will always be understood in the roofing universe.
Examples of extreme slopes range from 1 4 12 almost flat to 12 12 sloping down at a perfect 45 degree angle.
There are two suggested ways to measure a roof pitch.
For most home styles roof pitches fall in a range 4 12 a moderate slope up to 8 12 fairly steep.
Roof pitch or slope tells you how many inches the roof rises for every 12 inches in depth.
I see the reply above about snap lock.
Front side is 1 12 pitch till about six feet from the ridge.
So the pitch of a roof is determined by how many inches the slope rises for every 12 inches it runs horizontally.
Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof.
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.
The roofer making the complaint said that he bid that job and lost to a lower bidder while thinking that the only suitable materials would include mule hide epdm or high rib steel.
High and low pitch examples two examples at each end of the spectrum.
I have a client who has a simple gabled roof with solid decking and dimensional shingles with a ridge vent he is looking to go with standing seam.
The combination of two numbers are used to display or show the roof pitch.
Roof pitch is a term describing how steep or flat your roof slope is.
At that point it changes slightly to a 2 12 pitch.
This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.
The first is from the top of the roof.
Roof pitch varies depending on culture climate style and available materials.
The table below shows common roof pitches and the equivalent grade degrees and radians for each.
If a roof rises 1 in a length of 12 this is 1 12 roof pitch.
1 12 roof pitch angle 4 76 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.
Back side is 2 12 pitch.
In the usa the range of standard pitches is anywhere between 4 12 and 9 12.
Contemporary houses often have flat roofs which shouldn t be completely flat but should be around 1 40.