How Do I Measure My Roof Pitch

For more complex roofs you may need to calculate it section by.

How do i measure my roof pitch.

Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. This is the amount your roof inclines in a 1 foot span or the pitch. Before taking any measurements you must first confirm that it s safe to walk on your roof. How to calculate roof pitch.

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. You ll need a level that is 12 or longer and a tape measure. This is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares. 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. The 7 means that the roof rises 7 for every 12 it runs. Check the surface of the. The slope is the same as the pitch.

Position your level against the roof until the bubble of the vial sits between two lines. Rafter rise run from the pythagorean theorem. Simply mark a level at 12 hold it perfectly level and measure from the roof surface to your 12 mark this. The example to right shows 2 different ways to determine or calculate roof pitch also called roof slope.

Take the measurement of the vertical. One method to find the pitch is to climb on the roof and measure the rise for a 12 run. 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. The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7.

Rise run pitch where pitch is expressed in percent. Take a measurement of 12 inches using a level. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Example a the measurements are taken from on top of the roof.

Pitch tan angle where angle is the roof pitch expressed in degrees. First measure 12 inches from one end of the level and make a mark. For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally.