If you can t get to your attic you can measure slope on your rooftop as long as it s safe to go up there.
How do you work out pitch of a roof.
Rafter rise run from the pythagorean theorem.
Here is the equation in full roof pitch 1 tangent rise run measuring properly will require access to your roof either externally or from your loft space.
Here are the steps to follow for the roof angle calculator.
After measuring the slope estimate the roof pitch by dividing the slope by 2 if you have a simple gable roof.
Finally enter the value of the rafter length and.
Slope tan degrees.
If you know the angle of the roof in degrees you can find the roof pitch by converting the angle in degrees to a slope then finding the rise by multiplying the slope by 12.
The next step is to punch in 1 whatever your tangent is to find the angle of your roof pitch.
If you are trying to learn how to measure roof pitch calculations accurately you should really consider the importance of using a calculator.
Once you have these two measurements you ll need to grab hold of a calculator and divide the rise by the run to work out the tangent.
First enter the value of the rise and choose the unit of measurement from the drop down menu.
Then enter the value of the run and choose the unit of measurement from the drop down menu.
Then multiply the slope by 12 to get the rise.
If you are trying hard to work out how to figure roof pitch measurements the calculator takes away all of those problems for you more or less instantly.
The easiest way to do this is by accessing a rafter in your attic if you can.
Before you calculate roof pitch you ll need to measure the slope of your roof.
How to calculate roof pitch.
First find the slope by finding the tangent of the degrees eg.