How Do I Work Out The Pitch Of A Roof

If you prefer to work the angle out the traditional way without our handy calculator you can use the following equations to find the length of the rafter and the slope.

How do i work out the pitch of a roof. Although most homeowners do not need to measure pitch it still pays to understand this term. How to convert roof pitch to degrees. Technically roof pitch is the ratio of total vertical roof height the rise to total horizontal distance from wall to wall the span. The maths bit the angle of your roof is calculated the same way you d work the angle of a right angled triangle.

Knowing your exact roof pitch is essential in ensuring you get the right window and flashing for your loft conversion or home extension. 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. A 12 12 pitch roof has a pitch angle of 45. Angle the angle of a roof is the same as the roof s slope except instead of being.

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Find out more about the different ways you can work out your roof pitch. Check your results with the omni roof pitch calculator. When you re arranging for repairs or roofing material your calculations will be way off if.

Rise run rise run slope. 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. If you are trying hard to work out how to figure roof pitch measurements the calculator takes away all of those problems for you more or less instantly. To convert between american roofing ratios and pitch degrees follow these steps.

The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7. Find the inverse tangent of the pitch to find the angle in degrees. Divide the first part of the ratio by 12 to work out the pitch. To do this simply convert the rise and run as a fraction to a decimal form eg.

First convert the pitch to a slope. Marvel at your mathematical. To find the angle of a roof in degrees convert the pitch to a slope then convert to degrees by finding the arc tangent of the slope.