Standard Roof Pitch Degrees

The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72.

Standard roof pitch degrees. Roof slope expressed as rise. 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. The pros and cons of aluminum roofing. You write the pitch assuming a run of 12 inches thus the ratio would describe how much a roof rises for each foot of the run.

Locate its tangent or tan and follow the left row for you to read its corresponding degree. Roof pitch and corresponding angles. Identify the rise and run. Determine its angle through taking a 12 inch level and.

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. Divide its rise by run in. 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. Most roof s have a pitch in the 4 12 to 9 12 range.

Select the best roof trusses and budget amount. Basic about roof pitches common roof pitches different roof pitches fundamentals roof pitch roof pitch degrees roof pitches ideas standard roof pitch. Pitches above 9 12 are very highly angled and are designated steep slope roofs. Common roof pitches and equivalent grade degree and radian angles.

As aforementioned there is no standard pitch of a roof. How do you calculate the slope of a roof. The most commonly used roof pitches fall in a range between 4 12 and 9 12. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.

Pitches of less than 2 12 are considered flat roofs even though they may be very slightly angled. To see what the degree equivalents are for standard rise in run roof pitches see our page quick reference. These are utilized in residential applications. This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees.

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. Some of the most common roof pitch types are conventional slope type roofs designed with pitch ranging from 4 12 to 9 12. But the most commonly used pitches range between 4 12 and 9 12.