1 12 Slope Roof

In some very steep roofs you may see the gradient inverted so that the run varies but the rise is held as 12.

1 12 slope roof.

The table below shows common roof pitches and the equivalent grade degrees and radians for each. That means the roof doesn t shed water as easily as steeper roofs which is why choosing the right type of roofing material is so important. The exact roof slope in degrees is given by the arctangent. Roof slopes are identified using the gradient method described above where the rise varies but the run is usually 12.

Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio. 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. A 2 12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal distance.

A very low pitch roof can also be done in metal. Definitions vary on when a roof is considered pitched. Metal roofing on 1 12 pitch the pitch is only 1 12. At 1 12 pitch you are right at the threshold where standing seam becomes impermissible i mean true standing seam with a rolled lock seam and soldered flat seams must be used.

A soldered flat seam metal roof won t be cheap and must be done by an artisan but it lasts a very long time. Low slope roofs have gradients of 3 12 or less. Simply put it s a shallow roof. 1 12 roof pitch angle 4 76 degrees.

Pitch is the term used to describe the angle slope or slant of your roof. 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. In degrees 10 2 in 12 or 1 in 6 is considered a minimum. 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 a roof rises 1 in a length of 12 this is 1 12 roof pitch. Or the colon can replace the slash as in 2 12 or 7 12. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Arctan 3 12 14 0 the primary purpose of pitching a roof is to redirect water and snow.

Thus pitch is typically greater in areas of high rain or snowfall. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12.