Pitch Finder For Roofs

Here s an easy safe way to determine the pitch from inside your attic.

Pitch finder for roofs.

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Calculate the roof pitch as the proportion of rise and run. The slope of your roof is the ratio of vertical distance rise to horizontal distance run. Roof pitch calculator the roof pitch calculator calculates slope pitch angle and rafter lengths based on input of rise m and run r.

It can also be written down as 25 or 14. There s no need to simplify them. What is the roof pitch. You ll need a level that is 12 or longer and a tape measure.

Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. The pitch is commonly defined as the ratio of rise over run in the form of x 12. All you need to do is just to rearrange the equations. Pitch rise run 1 5 6 25.

After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually. Use the diagrams on this page as a reference when inputting rise and run and while interpreting the calculated results. One method to find the pitch is to climb on the roof and measure the rise for a 12 run. For example if you find 4 inches of height with the tape measure at the 12 inch mark on the level your slope is 4 12 or 4 in 12.

Pitch finder take pictures accurate roof take offs measurements preview the roof on the map then save or import image blueprint access sketch tool and trace the roof to measure one plane at a time no need to set a scale unless using an image blueprint use positioning tool and tap points to reposition or delete. Run 2 rafter 2 rise 2. Angle arctan pitch arctan 0 25 14 finally you can find the roof pitch in the form of x 12. 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.

Recalculate this value into an angle. For example if a roof has a pitch of 4 12 then for every 12 inches the building extends horizontally it rises 4 inches. X pitch 12 0 25 12 3. First measure 12 inches from one end of the level and make a mark.

The roof pitch is the slope of the rafter. Just write down the measurements you found. The rise is the height of the roof and the run is the horizontal span as pictured above. It can be calculated either using rafter and rise or rafter and run both using the pythagorean theorem as a roof pitch finder.

To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. If you have the values for the rise and rafter you can find run using the following.