12 12 Roof Pitch Degrees

Locate its tangent or tan and follow the left row for you to read its corresponding degree.

12 12 roof pitch degrees.

Select inches to enter decimal inches or millimeters for metric. For most home styles roof pitches fall in a range 4 12 a moderate slope up to 8 12 fairly steep. To convert between american roofing ratios and pitch degrees follow these steps. For every 12 horizontal feet the roof changes 8 feet in vertical height.

Roof pitch angle roof pitch multiplier 1 12 4 76 1 0035 2 12 9 46 1 0138. 9 12 roof pitch to angle 36 87 degrees. 9 12 roof pitch equivalents roof rises 9 in a length of 12. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.

Steeper slopes increase the sail effect that makes them susceptible to wind. The 12 inch run is considered standard in roof pitch or angle terminologies. A 12 12 pitch roof has a pitch angle of 45. What is a 9 12 roof pitch.

9 12 roof pitch angle to 36 87 degrees. Find all the needed factors in order to determine the pitch angle s degree. Angle scale if a roof or ramp rises 4 in a length of 12 the pitch is 4 in 12 which is 18 43 or 33 33 grade enter base length to calculate rise and diagonal for current pitch angle. Examples of extreme slopes range from 1 4 12 almost flat to 12 12 sloping down at a perfect 45 degree angle.

High and low pitch examples. Divide the first part of the ratio by 12 to work out the pitch. 9 12 roof pitch 37 degrees. Find the inverse tangent of the pitch to find the angle in degrees.

The 30 degree 7 12 roof recommendation is backed up by testing according to the publication science daily. What roof angle in degrees. A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof. Also referred to as 9 12 roof slope 9 on 12 9 to 12 and 9 12 roof angle 9 12 roof.

If your house roof is built with multiple pitches then square per roof must be calculated differently. 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. So use the 12 inch level as a constant run and 18 inch ruler as a variable rise. Most roof s have a pitch in the 4 12 to 9 12 range.

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. For this you can take help from roof pitch factor chart. 9 12 roof pitch angle 36 87 degrees. Lower slopes don t handle wind driven rain as well.