Roof Slope Degrees Chart

After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually.

Roof slope degrees chart.

Angle arctan pitch arctan 0 25 14. 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. Recalculate this value into an angle.

Rafter rise run 1 5 6 2 25 36 38 25rafter 38 25 6 18 m. The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. The combination of two numbers are used to display or show the roof pitch.

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. Finally you can find the roof pitch 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. 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.

In essence a roof pitch chart is provided as a rough guide usually by a roofing company. The roof pitch calculator is a convenient online tool you can use to quickly assess the pitch of your roof to determine the length of rafters you need. Pitch rise run 1 5 6 25.