How To Figure Roof Pitch

How to calculate roof pitch.

How to figure roof pitch.

This is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares. Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. Rafter rise run from the pythagorean theorem.

Before taking any measurements you must first confirm that it s safe to walk on your roof. Take a measurement of 12 inches using a level. Roof pitch calculator results explained slope the slope of a roof is represented as x 12 where x is the number of inches in rise for every 12 inches of run. Check the surface of the.

One method to find the pitch is to climb on the roof and measure the rise for a 12 run. You ll need a level that is 12 or longer and a tape measure. Here s an easy safe way to determine the pitch from inside your attic. For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally.

First measure 12 inches from one end of the level and make a mark. For a roof with the ridge above one wall the span is the same as the run. Take the measurement of the vertical. The slope is the same as the pitch.

For more complex roofs you may need to calculate it section by. Position your level against the roof until the bubble of the vial sits between two lines. 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. If you are trying to learn how to measure roof pitch calculations accurately you should really consider the importance of using a calculator.