Roof Pitch Angle Conversion Chart

The combination of two numbers are used to display or show the roof pitch.

Roof pitch angle conversion chart. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. 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. To convert between american roofing ratios and pitch degrees follow these steps.

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. Rise run rise run slope. Roof pitch is a determining factor for cost of the roof as well as the roof area and the type of materials used. Tap the button to start measuring and lay your device on an angle roof to measure pitch and angle and animate the diagram.

Roof angles and rafter plumb cuts. 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. While measuring tap to hear the spoken angle continuously as it changes.

With a mobile device a button will appear. The roof pitch angle greatly factors into the replacement cost of the roof. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Outside of the u s a degree angle is typically used.

Roofs having a lower pitch have a greater chance of creating water leaks as well as ice damming and so they require an intensive waterproofing system. To do this simply convert the rise and run as a fraction to a decimal form eg. Visit this page on your phone to directly measure pitch and angles. Angle the angle of a roof is the same as the roof s slope except instead of being.

In essence a roof pitch chart is provided as a rough guide usually by a roofing company to help you see what the average roof pitches tend to be. Roof pitch calculator results explained. A 12 12 pitch roof has a pitch angle of 45. Roof pitch is a term describing how steep or flat your roof slope is.

After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually. Roof pitch angle and slope factor charts. First convert the pitch to a slope. If this isn t practical then perform the same measurement on the underside of the roof.

Usually they come in the form of a roof pitch diagram chart but other times it will be presented to you in a conversion format. 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. We included a roof pitch chart below the 7 12 example image and the calculator below that.