Standard Roof Pitch Degrees

But the most commonly used pitches range between 4 12 and 9 12.

Standard roof pitch degrees.

How do you calculate the slope 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. 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.

Determine its angle through taking a 12 inch level and. The pros and cons of aluminum roofing. Roof slope expressed as rise. 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.

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. 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 most commonly used roof pitches fall in a range between 4 12 and 9 12.

This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees. Identify the rise and run. Pitches above 9 12 are very highly angled and are designated steep slope roofs. Locate its tangent or tan and follow the left row for you to read its corresponding degree.

Most roof s have a pitch in the 4 12 to 9 12 range. To see what the degree equivalents are for standard rise in run roof pitches see our page quick reference. 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. Select the best roof trusses and budget amount.

These are utilized in residential applications. Roof pitch and corresponding angles. Some of the most common roof pitch types are conventional slope type roofs designed with pitch ranging from 4 12 to 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. Common roof pitches and equivalent grade degree and radian angles. As aforementioned there is no standard pitch of a roof.