Roof Pitch Off By Inches

You can also estimate a roof pitch by eyeballing it from the ground from the gable side with a level and ruler.

Roof pitch off by inches.

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Divide the results by the number of 12 inch segments in your level. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed.

This forms an angle of 18 5 between the horizontal section and the roof and creates a gentle incline that is seen as a midpoint between a low pitch and medium pitch roof. A 4 12 is a roof slope that rises by 4 inches for every 12 inches across. Express roof pitch as the ratio of the amount of the vertical rise of a roof or rise over the corresponding horizontal distance or run you write the pitch assuming a run of 12 inches thus the ratio would describe how much a roof rises for each foot of the run. 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.

For example if you used a 24 inch level and your measurement was 12 inches the pitch in your roof is 6 in 12. As aforementioned there is no standard pitch of a roof. A roof with a 6 rise for every 12 run has a 6.