How To Determine The Pitch Of Your Roof

Before you calculate roof pitch you ll need to measure the slope of your roof.

How to determine the pitch of your roof.

Here s an easy safe way to determine the pitch from inside your attic. How to measure roof pitch. 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. To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil.

The easiest way to do this is by accessing a rafter in your attic if you can. Marvel at your mathematical. 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. After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually.

To convert between american roofing ratios and pitch degrees follow these steps. Check your results with the omni roof pitch calculator. Knowing the pitch of your roof is useful when designing an addition installing skylights or cutting new rake boards. After measuring the slope estimate the roof pitch by dividing the slope by 2.

Climb up on your roof. A 12 12 pitch roof has a pitch angle of 45. Find the inverse tangent of the pitch to find the angle in degrees. 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.