How To Work Out Your Roof Pitch

This is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares.

How to work out your roof pitch.

For a roof with the ridge above one wall the span is the same as the run. Naturally this does not go down particularly well without the right tools knowledge and assistance. For many people working out the roof pitch angles can be a bit of a nightmare especially if you are going to do it yourself and try to manage it all on your own. 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.

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. Position your level against the roof until the bubble of the vial sits between two lines. Calculate the roof pitch as the proportion of rise and run. Let s say it is equal to 1 5 m.

Measure the rise of your roof. Pitch rise run 1 5 6 25. Take a measurement of 12 inches using a level. For more complex roofs you may need to calculate it section by.

Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. One method to find the pitch is to climb on the roof and measure the rise for a 12 run. Take the measurement of the vertical. Before taking any measurements you must first confirm that it s safe to walk on your roof.

For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally. Rafter rise run 1 5 6 2 25 36 38 25rafter 38 25 6 18 m. The slope is the same as the pitch. Calculate the rafter length substituting these values into the following formula.

Check the surface of the.