How To Work Out The Pitch Of A New Roof

Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot.

How to work out the pitch of a new roof.

Calculate the roof pitch as the proportion of rise and run. Calculate the rafter length substituting these values into the following formula. Measure the rise of your roof. Place one end of a carpenter s level against the underside of the.

If you are trying to learn how to measure roof pitch calculations accurately you should really consider the importance of using a calculator. Roof pitch is used to describe the slope or angle of the roof. Any of the following will give you a good measurement 1 x research source a rafter in the attic. A barge rafter at the side of the gable step 2 position a level against the underside of the rafter.

As aforementioned there is no standard pitch of a roof. The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. The overhang of a rafter at the end of the roof. If you prefer to work the angle out the traditional way without our handy calculator you can use the following equations to find the length of the rafter and the slope.

Rafter height width from pythagoras remember that at school so. Let s say it is equal to 1 5 m. Step 1 access a rafter. 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 angle of your roof is calculated the same way you d work the angle of a right angled triangle. Pitch rise run 1 5 6 25.