Standard Roof Pitch Degrees

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.

Standard roof pitch degrees.

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. The value displayed as the rise will be your x. The 30 degree 7 12 roof recommendation is backed up by testing according to the publication science daily. Roof pitch is a measurement of a roof s slope expressed as a ratio.

The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Making decision about roof pitch. Steeper slopes increase the sail effect that makes them susceptible to wind.

Pitch tan angle where angle is the roof pitch expressed in degrees. Lower slopes don t handle wind driven rain as well. A 30 degree roof slope 7 12 pitch is the right pitch to aerodynamically handle high wind. The roof pitch is described by the vertical rise divided by horizontal span.

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. 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. The british standard for tilling and slating provides specific guidance about double lapped slating where calculations and recommendations for pitch and lap of slate are based on. However if you to do the process using your own knowledge you can still convert pitch to degrees by dividing the rise and run and get its corresponding measurement.

The table below shows common roof pitches and the equivalent grade degrees and radians for each. Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio. This part is well known as slope in geometry tangent function or stair construction in trigonometry. 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.

This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees.