1 2 12 Roof Pitch

Image 1 12 to 12 12 roof pitch 7 12 pitch.

1 2 12 roof pitch.

There is no standard universal roof pitch roof pitch varies depending on culture climate style and available materials in the usa the range of standard pitches is anywhere between 4 12 and 9 12 in the uk the typical house has a pitch between 40 50 although 45 should be avoided. The table below shows common roof pitches and the equivalent grade degrees and radians for each. 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. 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.

What is the standard pitch for a roof. Roof pitch designations are comprised of two numbers indicating a ratio. We included a roof pitch chart below the 7 12 example image and the calculator below that. If a roof rises 2 in a length of 12 this is 2 12 roof pitch.

The exact roof slope in degrees is given by the arctangent. Or the colon can replace the slash as in 2 12 or 7 12. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12. Thus pitch is typically greater in areas of high rain or snowfall.

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. Lower slopes don t handle wind driven rain as well. This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 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. If this isn t practical then perform the same measurement on the underside of the roof. Roof pitch degree table. The steep roof of the tropical papua new guinea longhouse for example sweeps.

Roof pitch defined and explained. 2 12 roof pitch angle 9 46 degrees. Contemporary houses often have flat roofs which shouldn. A 30 degree roof slope 7 12 pitch is the right pitch to aerodynamically handle high wind.

Steeper slopes increase the sail effect that makes them susceptible to wind.