1 Degree Roof Pitch

The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72.

1 degree roof pitch.

This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees. Roof pitch defined and explained. 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. Lower slopes don t handle wind driven rain as well.

A 12 12 pitch roof has a pitch angle of 45. Enter run the flat level length then click pitch angle or rise to select then enter other known dimension angle or 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 triangle diagram will be re drawn to scale with all dimensions marked.

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12. To convert between american roofing ratios and pitch degrees follow these steps. Pitch is the term used to describe the angle slope or slant of your roof.

Or the colon can replace the slash as in 2 12 or 7 12. Low slope roofing needs special techniques and materials in order to avoid leaks and roof damage and it ranges from 1 12 4 12. Roof pitch designations are comprised of two numbers indicating a ratio. Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio.

Drag sliders to animate the results and diagram. 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. Steeper slopes increase the sail effect that makes them susceptible to wind. The 30 degree 7 12 roof recommendation is backed up by testing according to the publication science daily.

What degree angle is a 12 12 pitch roof. The table below shows common roof pitches and the equivalent grade degrees and radians for each. How to convert roof pitch in degrees converting this mathematical formula is not that easy especially if you don t have a lot of skill when it comes to math. Divide the first part of the ratio by 12 to work out the pitch.

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.