How To Work Out Your Roof Pitch

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.

How to work out your roof pitch.

Position your level against the roof until the bubble of the vial sits between two lines. For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally. Naturally this does not go down particularly well without the right tools knowledge and assistance. Take a measurement of 12 inches using a level.

Let s say it is equal to 1 5 m. 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. Take the measurement of the vertical. You ll need a level that is 12 or longer and a tape measure.

Check the surface of the. Calculate the rafter length substituting these values into the following formula. Measure the rise of your roof. Rafter rise run 1 5 6 2 25 36 38 25rafter 38 25 6 18 m.

For a roof with the ridge above one wall the span is the same as the run. One method to find the pitch is to climb on the roof and measure the rise for a 12 run. Pitch rise run 1 5 6 25. Calculate the roof pitch as the proportion of rise and run.

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. Before taking any measurements you must first confirm that it s safe to walk on your roof. First measure 12 inches from one end of the level and make a mark.

To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil.