12 12 Roof Pitch Degrees

Lower slopes don t handle wind driven rain as well.

12 12 roof pitch 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. 9 12 roof pitch equivalents roof rises 9 in a length of 12. Roof pitch angle roof pitch multiplier 1 12 4 76 1 0035 2 12 9 46 1 0138. 9 12 roof pitch angle to 36 87 degrees.

Also referred to as 9 12 roof slope 9 on 12 9 to 12 and 9 12 roof angle 9 12 roof. Most roof s have a pitch in the 4 12 to 9 12 range. If your house roof is built with multiple pitches then square per roof must be calculated differently. Select inches to enter decimal inches or millimeters for metric.

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. A 12 12 pitch roof has a pitch angle of 45. 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.

Locate its tangent or tan and follow the left row for you to read its corresponding degree. Steeper slopes increase the sail effect that makes them susceptible to wind. For this you can take help from roof pitch factor chart. Find the inverse tangent of the pitch to find the angle in degrees.

For every 12 horizontal feet the roof changes 8 feet in vertical height. What roof angle in degrees. 9 12 roof pitch angle 36 87 degrees. The 12 inch run is considered standard in roof pitch or angle terminologies.

A 30 degree roof slope 7 12 pitch is the right pitch to aerodynamically handle high wind. The 30 degree 7 12 roof recommendation is backed up by testing according to the publication science daily. What is a 9 12 roof pitch. For most home styles roof pitches fall in a range 4 12 a moderate slope up to 8 12 fairly steep.

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Examples of extreme slopes range from 1 4 12 almost flat to 12 12 sloping down at a perfect 45 degree angle. Find all the needed factors in order to determine the pitch angle s degree. The table below shows common roof pitches and the equivalent grade degrees and radians for each.

9 12 roof pitch 37 degrees. The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72. High and low pitch examples. To convert between american roofing ratios and pitch degrees follow these steps.