Solve For Roof Pitch

Here are the equations you may use to solve for the length of the slope and the rafter.

Solve for 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. Most people interested in roof pitch are actually measuring the slope which is the most useful measurement when considering roofing material and rainwater. The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. There is no standard universal roof pitch roof pitch varies depending on culture climate style and available materials in the usa the range of standard pitches is anywhere between 4 12 and 9 12 in the uk the typical house has a pitch between 40 50 although 45 should be avoided.

Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. You can also calculate roof pitch even without using a roof slope calculator. Use the following formula which also describes a right triangle. Roof pitch is used to describe the slope or angle of the roof.

Slope is the correct term for the ratio of vertical to horizontal distance on a particular plane of the roof. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.