1 12 Slope Roof

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.

1 12 slope roof. The table below shows common roof pitches and the equivalent grade degrees and radians for each. 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. Simply put it s a shallow roof. 1 12 roof pitch angle 4 76 degrees.

The minimum roof pitch for shedding snow is around 30 or a 6 12 or 7 12 slope although this is not a definite as the material of your roof the direction of the snow and wind are some factors that can affect whether or not snow will slide as roofs of as little as 10 have been reported to shed snow. The exact roof slope in degrees is given by the arctangent. Definitions vary on when a roof is considered pitched. 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. Pitch is the term used to describe the angle slope or slant of your roof. 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. 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. I have read some articles that state this type of metal will work fine and others that implicitly state not to use metal for such a low pitch. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12. Roof pitch designations are comprised of two numbers indicating a ratio.

Thus pitch is typically greater in areas of high rain or snowfall. Most roof s have a pitch in the 4 12 to 9 12 range. Metal roofing on 1 12 pitch the pitch is only 1 12. Arctan 3 12 14 0 the primary purpose of pitching a roof is to redirect water and snow.

If a roof rises 1 in a length of 12 this is 1 12 roof pitch. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.