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 measure the pitch of your roof.
If it s four inches you have a 4 in 12 pitch and so forth for other measurements thereby determining your roof pitch.
However if you have a more complex roof you.
After measuring the slope estimate the roof pitch by dividing the slope by 2 if you have a simple gable roof.
Placing a ladder near the roof you will put a level a foot or so up on the roof hold it level and measure from the 12 inch mark straight down.
The easiest way to do this is by accessing a rafter in your attic if you can.
Here s an easy safe way to determine the pitch from inside your attic.
To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil.