How To Measure Roof Pitch

If you are trying to learn how to measure roof pitch calculations accurately you should really consider the importance of using a calculator.

How to measure roof pitch.

Using ruler and tape you can do it anyway of these ways. The underside of a rafter on a overhang at the bottom of the roof 3. For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally. Roof pitch is simply the slopecreated by the rafter.

It can be assessed in two ways either as the angle the rafter makes with the horizontal or the proportion between the rise and the run of the roof. For more complex roofs you may need to calculate it section by. 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. Roof pitch is often expressed as a ratio between rise and run in the form of x 12.

Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. The slope is the same as the pitch. For a roof with the ridge above one wall the span is the same as the run. How to measure roof pitch to measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil.

First measure 12 inches from one end of the level and make a mark. 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. As aforementioned there is no standard pitch of a roof. On a ladder at the walled part of the pitched roof place the level against the roof overhang rafter with the 12 inch.

The underside of a rafter in the attic.