Remember slope is expressed as a ratio and in inches per foot.
Measuring roof pitch.
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.
Another method to find the roof pitch is to go into the attic and measure the rise.
And pitch is a fraction derived by dividing the rise by the entire span.
If the slope is 4 12 the pitch for the 24 foot span is 1 6.
How to calculate the pitch of a roof method one.
Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level.
If the pitch is 1 3 the slope is 8 12.
One method to find the pitch is to climb on the roof and measure the rise for a 12.
For a roof with the ridge above one wall the span is the same as the run.
For more complex roofs you may need to calculate it section by.
Slope minimums for various roof coverings.
The slope is the same as the pitch.
First measure 12 inches from one end of the level and make a mark.
Measure from the roof.
Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio.
On a ladder at the walled part of the pitched roof place the level against the roof overhang rafter with the 12 inch.
For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally.
Measure from the attic.