15 Degree Roof Slope

A 30 degree roof slope 7 12 pitch is the right pitch to aerodynamically handle high wind.

15 degree roof slope.

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

Lower slopes don t handle wind driven rain as well. 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. Find the inverse tangent of the pitch to find the angle in degrees. The table below shows common roof pitches and the equivalent grade degrees and radians for each.

With the use of this converter it will be easier for you to locate a 30 degree roof pitch 20 degree roof pitch 25 degree roof pitch or a 15 degree roof pitch. A 12 12 pitch roof has a pitch angle of 45. Steeper slopes increase the sail effect that makes them susceptible to wind. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.

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. But with the use of a roof pitch in degrees converter you will be able to get the correct measurement. What degree angle is a 12 12 pitch roof. The 30 degree 7 12 roof recommendation is backed up by testing according to the publication science daily.

Divide the first part of the ratio by 12 to work out the pitch.