How To Cut Roof Angles

Use a straightedge to help you transfer the angle you marked on the siding.

How to cut roof angles.

You will need to make 22 5 degree angle cuts on the rafter joist ends that mate up to the top plate or header. Angle the angle of a roof is the same as the roof s slope except instead of being represented as x 12 it is represented in degrees. Start by cutting. Decide the slope pitch of the roof you should be able to determine the slope pitch of the roof you will be constructing by looking at the.

Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. Lay the square on a table with the long blade. Once you ve marked the lines use your pencil to draw the diagonal length on the rafter. To cut roof rafters start by fixing the stair gauges on your framing square to the dimensions of your pitch.

45 degrees where the joists meet up with the top plate or header and 90 where the joists meet in the middle at the ridge board. Every elevation that shows the roof should be labeled. If you use the wrong dimensions you will find the wrong angle. The combination of two numbers are used to display or show the roof pitch.

Translate the pitch to an angle by using a carpenter square. Set unit rise hold a framing square so that the blade is facing you pointing to the right side and the tongue is. Check all your measurements twice. Find the pitch of your roof as labeled on your blueprint.

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. Next set the framing square on top of the rafter beam and use a pencil to trace the outside edge of the framing square s tongue. Method 1 using framing square. How to cut roof trusses at angles step 1.

Roof pitch is a term describing how steep or flat your roof slope is. Roof pitch angle and slope factor charts. Measure the bottom piece of siding to the proper length which is the length of the wall to the roof line minus 2 inches.