Roof Slope Degrees Chart

Pitch rise run 1 5 6 25.

Roof slope degrees chart. Finally you can find the roof pitch in the form of x 12. 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. Two most common methods 4 12 or 4 12 are used for marking the pitch of a 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.

The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72. In essence a roof pitch chart is provided as a rough guide usually by a roofing company. Then you ll be able to measure slope from an unfinished attic space under the roof. This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees.

A ratio of 1 1 62 is known as the golden ratio and therefore the vast majority of roof pitch in degrees charts you see will be working to this ratio at the very least. Calculate the roof pitch as the proportion of rise and run. After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually. To obtain an accurate roof pitch measurement properly measure the rise and run.

Using a tape measure make a pencil mark 12 inches from the end of a carpenter s level. Angle arctan pitch arctan 0 25 14. Recalculate this value into an angle.