Standard Roof Pitch Degrees

Most roof s have a pitch in the 4 12 to 9 12 range.

Standard roof pitch degrees.

Determine its angle through taking a 12 inch level and. 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 measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. The rise will be equal to the amount of the incline within the given distance or the run that.

Pitches of less than 2 12 are considered flat roofs even though they may be very slightly angled. Common roof pitches and equivalent grade degree and radian angles. Roof slope expressed as rise. How do you calculate the slope of a roof.

Some of the most common roof pitch types are conventional slope type roofs designed with pitch ranging from 4 12 to 9 12. Divide its rise by run in. The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72. 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.

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. Identify the rise and run. 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.

Select the best roof trusses and budget amount. Roof pitch and corresponding angles. 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. But the most commonly used pitches range between 4 12 and 9 12.

The pros and cons of aluminum roofing. This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees. Pitches lower than 4 12 have a slight angle and they are defined as low slope roofs. Roof pitches exceeding the level of 9 12 or approximately 37 degrees are termed steep slope roofs.

Pitches above 9 12 are very highly angled and are designated steep slope roofs. The most commonly used roof pitches fall in a range between 4 12 and 9 12. To see what the degree equivalents are for standard rise in run roof pitches see our page quick reference.