How To Determine The Pitch Of Your Roof

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How to determine the pitch of your roof.

Knowing the pitch of your roof is useful when designing an addition installing skylights or cutting new rake boards. Before you calculate roof pitch you ll need to measure the slope of your roof. How to measure roof pitch. 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. Climb up on your roof. After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually. A 12 12 pitch roof has a pitch angle of 45.

Place the end of your level the 0 inch point of your 12 marking against the roof surface. 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. The easiest way to do this is by accessing a rafter in your attic if you can. To convert between american roofing ratios and pitch degrees follow these steps.

Divide the first part of the ratio by 12 to work out the pitch. Check your results with the omni roof pitch calculator. This is the amount your roof inclines in a 1 foot span or the pitch. Here s an easy safe way to determine the pitch from inside your attic.