To accurately calculate the area of your roof you must first determine its slope or pitch.
How to figure out the pitch of your roof.
To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil.
A 12 12 pitch roof has a pitch angle of 45.
After measuring the slope estimate the roof pitch by dividing the slope by 2.
Here s an easy safe way to determine the pitch from inside your attic.
The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed.
The roof pitch calculator is a convenient online tool you can use to quickly assess the pitch of your roof to determine the length of rafters you need.
How roof pitch is calculated.
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.
After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually.
The easiest way to do this is by accessing a rafter in your attic if you can.
Slope the slope of a roof is represented as x 12 where x is the number of inches in rise for every 12 inches of run this is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares.
Hold the level straight and level bubble centered and then measure the vertical distance down from the your 12 mark on the level down to the roof.
How to measure roof pitch.
For example if a roof has a pitch of 4 12 then for every 12 inches the building extends horizontally it rises 4 inches.
A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally.
Angle the angle of a roof is the same as the roof s slope except instead of being.
Roof pitch is used to describe the slope or angle of the roof.
Knowing the pitch of your roof is useful when designing an addition installing skylights or cutting new rake boards.
To convert between american roofing ratios and pitch degrees follow these steps.
Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.
The pitch is commonly defined as the ratio of rise over run in the form of x 12.
How to calculate the pitch of a roof.
Marvel at your mathematical.
This is the amount your roof inclines in a 1 foot span or the pitch.
Before you calculate roof pitch you ll need to measure the slope of your roof.
Find the inverse tangent of the pitch to find the angle in degrees.
Roof pitch calculator results explained.
Homes and other buildings have roofs with slopes ranging from no slope or flat to very steep slopes.
The rise is the height of the roof and the run is the horizontal span as pictured above.
Divide the first part of the ratio by 12 to work out the pitch.
