Unit For Pitch Of A 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.

Unit for pitch of a roof.

There is no standard universal roof pitch. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. The pitch of a roof is its vertical rise over its horizontal span. In the uk the typical house has a pitch between 40 50 although 45 should be avoided.

In the usa the range of standard pitches is anywhere between 4 12 and 9 12. Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio. Carpenters do not refer to the angle of roof as 30 but prefer to use the pitch of the roof. A a roof with a 6 rise for every 12 run has a 6 per foot or 6 in 12 pitch.

A 12 to 24 pitch is expressed as 1 2. On the figure below the various permitted pitches for different roof materials are depicted. Roof pitch varies depending on culture climate style and available materials. However most often a ratio of pitch also fraction is slang used for the more useful slope of rise over run of just one side half the span of a dual pitched roof.

Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. The roof s pitch is its vertical rise divided by its horizontal span or run called slope in geometry or the tangent function in trigonometry. Pitch is thus the ratio of the rise in inches to a 12 inch run and is often expressed using a semicolon for example 6 12.