Roof Pitch Degrees

Rise run rise run slope.

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. To do this simply convert the rise and run as a fraction to a decimal form eg. Roof pitches ranging from 0 12 0 degrees to 21 12 60 26 degrees.

Roof pitch refers to the slope which the rafter creates. 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. 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. Roof pitch varies depending on culture climate style and available materials.

How to convert roof pitch to degrees. Roof pitch and corresponding angles. Identify the rise and run. The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72.

Determine its angle through taking a 12 inch level and. Pitch angle incline slope they all can be used to refer to the steepness of a 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. There is no standard universal roof pitch.

Roof pitch to degrees equivalents this drawing demonstrates how many degrees rise for each pitch of a typical roof. 8 12 pitch 33 75 degrees. In the usa the range of standard pitches is anywhere between 4 12 and 9 12. Active ventilation products.

To see what the degree equivalents are for standard rise in run roof pitches see our page quick reference. Often you express roof pitch as the ratio between the rise and the run in the form of x 12. This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees. Divide its rise by run in.

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. First convert the pitch to a slope. Look at the column labeled pitch then look under degrees to get the corresponding amount of degrees. To find the angle of a roof in degrees convert the pitch to a slope then convert to degrees by finding the arc tangent of the slope.

In the roofing trade the go to term is pitch and it is expressed in terms of 12 inches so the pitch of a roof is determined by how many inches the slope rises for every 12 inches it runs horizontally. Skip to main content.