How To Figure Out The Pitch Of Your Roof

A 12 12 pitch roof has a pitch angle of 45.

How to figure out the pitch of your roof.

The pitch is commonly defined as the ratio of rise over run in the form of x 12. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. To accurately calculate the area of your roof you must first determine its slope or pitch. Divide the first part of the ratio by 12 to work out the pitch.

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. Roof pitch is used to describe the slope or angle of the roof. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.

This is the amount your roof inclines in a 1 foot span or the pitch. 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. Before you calculate roof pitch you ll need to measure the slope of your roof. To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil.

After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually. The rise is the height of the roof and the run is the horizontal span as pictured above. Roof pitch calculator results explained. How to calculate the pitch of a roof.

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. Knowing the pitch of your roof is useful when designing an addition installing skylights or cutting new rake boards. For example if a roof has a pitch of 4 12 then for every 12 inches the building extends horizontally it rises 4 inches. Place the end of your level the 0 inch point of your 12 marking against the roof surface.

To convert between american roofing ratios and pitch degrees follow these steps. 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. The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. How roof pitch is calculated.

How to measure roof pitch. Check your results with the omni roof pitch calculator. Find the inverse tangent of the pitch to find the angle in degrees. After measuring the slope estimate the roof pitch by dividing the slope by 2.

Angle the angle of a roof is the same as the roof s slope except instead of being. Homes and other buildings have roofs with slopes ranging from no slope or flat to very steep slopes.