Roof Slope Degrees Chart

Using a tape measure make a pencil mark 12 inches from the end of a carpenter s level.

Roof slope degrees chart.

This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees. Finally you can find the roof pitch in the form of x 12. Recalculate this value into an angle. In essence a roof pitch chart is provided as a rough guide usually by a roofing company.

The combination of two numbers are used to display or show the roof pitch. The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72. To obtain an accurate roof pitch measurement properly measure the rise and run. Angle arctan pitch arctan 0 25 14.

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. Pitch rise run 1 5 6 25. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. 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.

After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually. Calculate the roof pitch as the proportion of rise and run. Rafter rise run 1 5 6 2 25 36 38 25rafter 38 25 6 18 m.