2 Pitch Roof

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.

2 pitch roof. The table below shows common roof pitches and the equivalent grade degrees and radians for each. In degrees 10 2 in 12 or 1 in 6 is considered a minimum. You can go by the measurements taken by walking the roof. 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.

Asphalt shingles continue to be the most widely installed roof covering option in north america. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12. To make the bottom cut i laid out a level cut for a 4 in 12 pitch. A roof pitch multiplier also known as a roof pitch factor is a number that when multiplied by the area covered by a sloped roof gives the actual area of the roof.

Arctan 3 12 14 0 the primary purpose of pitching a roof is to redirect water and snow. The triangle diagram will be re drawn to scale with all dimensions marked. Or the colon can replace the slash as in 2 12 or 7 12. Thus pitch is typically greater in areas of high rain or snowfall.

Roof pitch designations are comprised of two numbers indicating a ratio. To let the jacks sit plumb on top of the sleepers we angled the level cuts to the 3 1 2 in 12 pitch of the shed roof setting the circular saw to a 16 degree bevel the degree equivalent of a 3 1 2 in 12 pitch. Enter run the flat level length then click pitch angle or rise to select then enter other known dimension angle or pitch. Most roof s have a pitch in the 4 12 to 9 12 range.

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 short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. Roof pitch defined and explained. Drag sliders to animate the results and diagram.

Since this is a flat roof or nearly flat 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. Resilient asphalt shingles lie much flatter to the substrate than slate tile and concrete which keeps water from being easily blown under them. Definitions vary on when a roof is considered pitched.

The exact roof slope in degrees is given by the arctangent. 0 pitch 1 00x the roof area. Pitch is the term used to describe the angle slope or slant of your roof.