12 Degree Roof Pitch

A pitch of 2 12 is the minimum pitch for shingles made of asphalt so your roof just barely makes the cut off for one of the most popular roofing material options.

12 degree roof pitch.

A 30 degree roof slope 7 12 pitch is the right pitch to aerodynamically handle high wind. 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 following are important details to better understand this conversion. The exact roof slope in degrees is given by the arctangent.

This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees. Find the inverse tangent of the pitch to find the angle in degrees. Resilient asphalt shingles lie much flatter to the substrate than slate tile and concrete which keeps water from being easily blown under them. Also roof pitch angle is sometimes referred to as 12 12 6 12 8 12 and so forth.

What degree angle is a 12 12 pitch roof. Lower slopes don t handle wind driven rain as well. Thus pitch is typically greater in areas of high rain or snowfall. Definitions vary on when a roof is considered pitched.

In degrees 10 2 in 12 or 1 in 6 is considered a minimum. The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72. But how are going to determine the angle s degree. Arctan 3 12 14 0 the primary purpose of pitching a roof is to redirect water and snow.

Roof pitch calculator results explained. Divide the first part of the ratio by 12 to work out the pitch. 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. The 30 degree 7 12 roof recommendation is backed up by testing according to the publication science daily.

Most roof s have a pitch in the 4 12 to 9 12 range. Angle the angle of a roof is the same as the roof s slope except instead of being. Steeper slopes increase the sail effect that makes them susceptible to wind. A 12 12 pitch roof has a pitch angle of 45.

The table below shows common roof pitches and the equivalent grade degrees and radians for each. 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. 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.