How To Work Out The Pitch Of A New Roof

A 12 12 pitch roof has a pitch angle of 45.

How to work out the pitch of a new roof.

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. 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. As aforementioned there is no standard pitch of a roof. The roof pitch measures the steepness of your shed roof and typically takes values from 1 to 12.

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. Divide the slope by two to get the pitch. Divide the first part of the ratio by 12 to work out the pitch. For a roof with the ridge above one wall the span is the same as the run.

To convert between american roofing ratios and pitch degrees follow these steps. If you are trying to learn how to measure roof pitch calculations accurately you should really consider the importance of using a calculator. On the roof hold the level perfectly level and measure the height from the roof to the level 12 inches away from where the level touches the surface this will be the rise. The next step is to punch in 1 whatever your tangent is to find the angle of your roof pitch.

For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally. You ll need a level that is 12 or longer and a tape measure. One method to find the pitch is to climb on the roof and measure the rise for a 12 run. If your roof pitch is greater than 3 your roof is considered pitched read more about roof pitch at wikipedia.

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. Here are a couple examples. Find the inverse tangent of the pitch to find the angle in degrees.