How To Determine The Pitch Of Your Roof

Climb up on your roof.

How to determine the pitch of your roof.

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. This is the amount your roof inclines in a 1 foot span or the pitch. Divide the first part of the ratio by 12 to work out the pitch.

Find the inverse tangent of the pitch to find the angle in degrees. Check your results with the omni roof pitch calculator. How to measure roof pitch. Before you calculate roof pitch you ll need to measure the slope of your roof.

Marvel at your mathematical. Place the end of your level the 0 inch point of your 12 marking against the roof surface. 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.

To convert between american roofing ratios and pitch degrees follow these steps. 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. 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.