1 2 Roof Pitch

The pitch can be expressed numerically as a fraction.

1 2 roof pitch.

The pitch fraction represents a certain amount of vertical rise over the entire span. The combination of two numbers are used to display or show the roof pitch. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. 2 12 roof pitch angle 9 46 degrees.

A 12 to 24 pitch is expressed as 1 2. Commonly used roof pitches were given names such as greek. For example given a roof with a rise of 4 feet and a span of 24 feet the pitch is 1 to 6 pitch which can be expressed as the fraction of 1 6. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof.

1 pitch 1 01 2 pitch 1 02 3 pitch 1 03 4 pitch 1 05 5 pitch 1 085 6 pitch 1 12 7 pitch 1 16 8 pitch 1 21 9 pitch 1 25 10 pitch 1 31 11 pitch 1 36 12 pitch 1 42. Historically roof pitch was designated in two other ways. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12. Roof pitch defined and explained.

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. 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. Roof pitch designations are comprised of two numbers indicating a ratio.

If a roof rises 2 in a length of 12 this is 2 12 roof 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. A ratio of the ridge height to the width of the building span and as a ratio of the rafter length to the width of the building. The maths behind this number is that it is the square root of rise run 2 1.

Most roof s have a pitch in the 4 12 to 9 12 range. Or the colon can replace the slash as in 2 12 or 7 12. Since this is a flat roof or nearly flat roof. Roof pitch is a term describing how steep or flat your roof slope is.

The table below shows common roof pitches and the equivalent grade degrees and radians for each. 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. 0 pitch 1 00x the roof area.