Common roof pitches and equivalent grade degree and radian angles.
Roof pitch slope factor chart.
Often you express roof pitch as the ratio between the rise and the run in the form of x 12.
Roof pitch refers to the slope which the rafter creates.
The combination of two numbers are used to display or show the roof pitch.
The roof slope factor chart also consists of conversion factors to determine the slope of the roof.
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.
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.
Learn more about finding the angle of a line using our slope calculator.
Most roof s have a pitch in the 4 12 to 9 12 range.
It is often compared to slope but is not exactly the same.
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 measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.
For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.
Roof pitch angle and slope factor charts roof pitch is a term describing how steep or flat your roof slope is.
Slope factor chart know your pitch when outfitting your residential or commercial structure with roofing materials from everlast roofing inc it s important to know the incline or pitch of your roof.
Usually they come in the form of a roof pitch diagram chart but other times it will be presented to you in a conversion format.
A 10 slope roof should not be confused with a 10 pitch roof as a 10 slope roof means that the roof rises by ten inches for every foot of run.
A roof pitch multiplier also called a roof pitch factor is a number that is multiplied by the area covered by a sloped roof to produce the area of the actual surface of the roof.
Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof.
In essence a roof pitch chart is provided as a rough guide usually by a roofing company to help you see what the average roof pitches tend to be.
The headache of using pythagoras and trigonometry can be spared by making use of these charts.
You can assess this in two ways either as the roof pitch angles which the rafters make with the horizontal or the proportion between the run and the rise of the roof.
Outside of the u s a degree angle is typically used.
