1 2 12 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.

1 2 12 roof pitch.

A 30 degree roof slope 7 12 pitch is the right pitch to aerodynamically handle high wind. Pitch is the term used to describe the angle slope or slant of your roof. Resilient asphalt shingles lie much flatter to the substrate than slate tile and concrete which keeps water from being easily blown under them. If a roof rises 2 in a length of 12 this is 2 12 roof pitch.

What is the standard pitch for a roof. Steeper slopes increase the sail effect that makes them susceptible to wind. 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. Contemporary houses often have flat roofs which shouldn.

The steep roof of the tropical papua new guinea longhouse for example sweeps. Roof pitch degree table. Most roof s have a pitch in the 4 12 to 9 12 range. Roof pitch designations are comprised of two numbers indicating a ratio.

Thus pitch is typically greater in areas of high rain or snowfall. Or the colon can replace the slash as in 2 12 or 7 12. Roof pitch defined and explained. We included a roof pitch chart below the 7 12 example image and the calculator below that.

Lower slopes don t handle wind driven rain as well. The table below shows common roof pitches and the equivalent grade degrees and radians for each. 2 12 roof pitch angle 9 46 degrees. Image 1 12 to 12 12 roof pitch 7 12 pitch.

The exact roof slope in degrees is given by the arctangent. 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 ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12. If this isn t practical then perform the same measurement on the underside of the roof.

The 30 degree 7 12 roof recommendation is backed up by testing according to the publication science daily.