Roof Pitch Angle Cuts

Screw the square gauge on the tongue at the marker for the slope pitch of the roof or the unit rise.

Roof pitch angle cuts.

Cut off one corner of the board at the angle you have set. Tap the button to start measuring and lay your device on an angle roof to measure pitch and angle and animate the diagram. Flip the board to the opposite corner and cut again so that the angles meet in a peak on the center line you drew. Measure as precisely as possible down to the 1 4 inch 0 64 cm 1 8 inch 0 32 cm or 1 16 inch 0 16 cm.

Roof angles and rafter plumb cuts. Before you start cutting you first need to determine how long your roof rafters need to be and the angles at which you ll cut the top and bottom of the rafter. Cut the end of a fourth piece using the same angle from the upper cords. So if your roof is a 45 degree angle that is for every 12 along the horizontal run it rises 12 it s a 12 12 pitch.

Use a square to mark a line up into the board 6 inches from the center of one end. Roof pitch slope roof angle degree 1 12 pitch. Screw the gauge in place. Rise run rise run slope.

Set unit run place the other square gauge at the run unit measurement mark. First convert the pitch to a slope. To do this simply convert the rise and run as a fraction to a decimal form eg. The tongue is the cut angle for the rafter.

This is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares. With a mobile device a button will appear. Set cut angle for rafter place the framing square so the blade is horizontal on the rafter and the tongue is on the rafter and draw lines. Visit this page on your phone to directly measure pitch and angles.

This is useful because sometime you may need to cut a bevel with your circular saw that is not calibrated using roof pitch style this setting on circular saws is calibrated in degrees. Use a tape measure to measure the entire width of your building. To find the angle of a roof in degrees convert the pitch to a slope then convert to degrees by finding the arc tangent of the slope. If it rises only 6 for every 12 it s a 6 12 pitch.

The traditional method has been rise inches 12 run inches.