Roof Rafter Finder

Includes result for hip valley factor slope factor and the roof slope in degrees.

Roof rafter finder. Use the diagrams on this page as a reference when inputting rise and run and while interpreting the calculated results. Rafter length calculator calculate the length of a rafter from the roof slope ratio of inches per foot and a building width measurement. Allow for ridge thickness when determining rafter run to outer wall. See rafter run to outer wall calculator below.

Half building width minus 1 2 ridge thickness. The rise of the rafter. Height of the scaffold. Just enter the dimensions of the roof rise and run to get started.

The roof pitch calculator calculates slope pitch angle and rafter lengths based on input of rise m and run r. If you add an eaves overhang dimension then the amount the rafter sticks passed the wall will be added to the rafter length. If your tool continuously blinks and beeps it may be indicating calibration errors or a decrease in density. Here the number is 941 86 inches.

Things you ll need tape measure rubber mallet. Roof pitch calculator roof slope calculator the roof pitch calculator is a convenient online tool you can use to quickly assess the pitch of your roof to determine the length of rafters you need. Print full scale rafter cut templates and birdsmouth templates fold template over rafter to mark or cut through. Don t assume the first indication of a rafter is.

Roof rise this should be calculated from the base of the roof to the highest point of the roof gable the peak. Here the number is 1166 66 inches. After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually. If you re building rafters and aren t sure where to start when determining the length of your lumber you re in the right place our rafter stock size calculator shows you how long your rafters should be so you ll know what you need in terms of framing lumber dimensional lumber studs and more.

Place a piece of thin cardboard over the irregular surface and slowly scan over the cardboard. Calculate the length of common rafters with this free and easy online tool by entering a dimension for the roof width selecting a pitch for the roof and the thickness of the ridge. The length of the rafter. The results are automatically fired.

Rafter run outer wall this should be measured starting from the center of the roof span and then extending to the very edge of the exterior wall. The chiptoolz rafter finder center line locator is the easiest way to find the center of a rafter ever.