How To Work Out The Pitch Of A New Roof

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.

How to work out the pitch of a new roof.

You ll need a level that is 12 or longer and a tape measure. Find the inverse tangent of the pitch to find the angle in degrees. A 12 12 pitch roof has a pitch angle of 45. For example if the roof rises 4 feet and the span is 16 feet twice the run then the pitch is 4 16 or 1 4.

Pitch is the incline of the roof represented as the ratio of rise to the span twice the run. If you are trying hard to work out how to figure roof pitch measurements the calculator takes away all of those problems for you more or less instantly. Here is the equation in full roof pitch 1 tangent rise run. To convert between american roofing ratios and pitch degrees follow these steps.

As aforementioned there is no standard pitch of a roof. This free roof pitch calculator will take your roof width see the picture and rise the height of the roof and will calculate the roof pitch both as numeric value. If your roof pitch is greater than 3 your roof is considered pitched read more about roof pitch at wikipedia. For a roof with the ridge above one wall the span is the same as the run.

Divide the slope by two to get the pitch. For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally. The next step is to punch in 1 whatever your tangent is to find the angle of your roof pitch. Divide the first part of the ratio by 12 to work out the pitch.

Here are a couple examples. If you are trying to learn how to measure roof pitch calculations accurately you should really consider the importance of using a calculator. The roof pitch measures the steepness of your shed roof and typically takes values from 1 to 12.