If your house roof is built with multiple pitches then square per roof must be calculated differently.
2 12 roof pitch in degrees.
The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72.
Divide the first part of the ratio by 12 to work out the pitch.
Most roof s have a pitch in the 4 12 to 9 12 range.
At slopes below 2 12 a granule surfaced asphalt membrane can be installed and many are available in colors to complement the shingle colors.
45 this is our pitch calculator which will convert pitch to angle or angle to pitch for half degree roof slope calculations.
Some roof specifications may express slope in the typical geometric terms of degrees.
Roof pitch degree table.
2 12 roof pitch angle 9 46 degrees.
A pitch of 2 12 is the minimum pitch for shingles made of asphalt so your roof just barely makes the cut off for one of the most popular roofing material options.
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 means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees.
What roof angle in degrees.
Resilient asphalt shingles lie much flatter to the substrate than slate tile and concrete which keeps water from being easily blown under them.
For reference 2 12 equates to about 9 5º and 4 12 to about 18 5º.
Enter any pitch or fraction of pitch to find angle.
Find the inverse tangent of the pitch to find the angle in degrees.
A 12 12 pitch roof has a pitch angle of 45.
If a roof rises 2 in a length of 12 this is 2 12 roof pitch.
Enter any angle or fraction of angle to find pitch.
To convert between american roofing ratios and pitch degrees follow these steps.
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.
On blue prints architects engineers usually display the pitch of a roof in the format shown on the image where number 4 represents a rise and number 12 represents a length.
For this you can take help from roof pitch factor chart.
Roof pitch angle roof pitch multiplier 1 12 4 76 1 0035 2 12 9 46 1 0138.
Conventional forms range from 4 12 9 12 and steep slope roofing is more than 9 12 and requires extra fasteners.