Using A Roof Pitch Finder

Let s say it is equal to 1 5 m.

Using a roof pitch finder.

Finding the pitch of a roof is simple with a speed square. Enter any angle or fraction of angle to find pitch. The roof pitch is a measure of roof steepness. But did you know that simple data already printed on your framing square can give key roof slope and rafter data.

Most angle finders only work on the top side of a roof. Before taking any measurements you must first confirm that it s safe to walk on your roof. How to obtain roof pitch or slope by using the rafter tables on a framing square measuring the roof slope pitch or rise and run is easy if you ve got a tape measure and more accurate still if you ve also got a level on hand. This is our pitch calculator which will convert pitch to angle or angle to pitch for half degree roof slope calculations.

The pitch is defined as the slope of the roof and is commonly represented as the ratio of the rise over the run in the form x 12. Calculate the roof pitch as the proportion of rise and run. Rafter rise run 1 5 6 2 25 36 38 25rafter 38 25 6 18 m. You ll need a level that is 12 or longer and a tape measure.

Calculate the rafter length substituting these values into the following formula. No fooling around with tape measures and levels. Simply set it on your roof or the underside of a rafter and read the gauge. 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.

Use the diagrams on this page as a reference when inputting rise and run and while interpreting the calculated results. The swanson speed square is a popular tool with most carpenters. 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.

This handy little tool is the easiest way to accurately find your roof pitch. Take a measurement of 12 inches using a level. Enter any pitch or fraction of pitch to find angle. Measure the rise of your roof.

The triangle shaped square was invented in 1925 by albert swanson to provide a quick accurate method for marking rafters. Position your level against the roof until the bubble of the vial sits between two lines. The roof pitch calculator calculates slope pitch angle and rafter lengths based on input of rise m and run r.