Roof Slope Factor Degrees

Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio.

Roof slope factor degrees.

This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees. Using a tape measure make a pencil mark 12 inches from the end of a carpenter s level. 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. Roof pitch and corresponding angles.

Determine its angle through taking a 12 inch level and. Look at the column labeled pitch then look under degrees to get the corresponding amount of degrees. Last updated july 10 2020 the following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72. Although there s isn t any standard pitch of a roof used on all kinds of sloped roofs you can determine the range of pitches by using a roof angle calculator and by considering factors like the local climate and roofing materials.

That s your roof pitch multiplier. The angle for 6 12 is 26 57 and in grades it is described as 50. The rise will be equal to the amount of the incline within the given distance or the run that. Identify the rise and run.

Then you ll be able to measure slope from an unfinished attic space under the roof. Factor charts you could calculate the slope factor for every single roof pitch but as a public service many roofing companies provide slope factor charts. Grades are the measure of percentage. For help converting any slope from one way of expressing it to another see roof slope expressed as rise in run degrees and percentage.

To obtain an accurate roof pitch measurement properly measure the rise and run. Feet the area of a hip roof equals the area of a gable roof with the same dimensions. 8 12 pitch 33 75 degrees. As 6 is half of 12 it is considered to be 50.

Divide its rise by run in. Locate its tangent or tan and follow the left row for you to read its corresponding degree. If you know the roof pitch in degrees find the secant of the slope using a scientific calculator. For example if the roof pitch is 45 then sec 45 1 414213.

Therefore your slope factor for a 6 12 pitch roof is 1 118. Roof pitch to degrees equivalents this drawing demonstrates how many degrees rise for each pitch of a typical roof.