How To Work Out The Pitch Of A New Roof

Measuring from the underside of the roof is usually the most accurate way to find the slope since there is no roofing material to make an uneven surface.

How to work out the pitch of a new roof.

Roof pitch is used to describe the slope or angle of the roof. Let s say it is equal to 1 5 m. Calculate the roof pitch as the proportion of rise and run. Step 1 access a rafter.

Measure the rise of your roof. The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. Rafter height width from pythagoras remember that at school so. If you are trying to learn how to measure roof pitch calculations accurately you should really consider the importance of using a calculator.

The angle of your roof is calculated the same way you d work the angle of a right angled triangle. Calculate the rafter length substituting these values into the following formula. Place one end of a carpenter s level against the underside of the. 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.

As aforementioned there is no standard pitch of a roof. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. 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. 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.

Any of the following will give you a good measurement 1 x research source a rafter in the attic. Rafter rise run 1 5 6 2 25 36 38 25rafter 38 25 6 18 m.