To Measure Roof Pitch

In the attic put the level against a rafter with the 12 inch mark on the bottom.

To measure roof pitch. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. When you re arranging for repairs or roofing material your calculations will be way off if. Roof pitch is used to describe the slope or angle of the roof. To calculate the size of the roof you need to measure the size of the roof as if it were flat account for roof pitch calculate square footage and finally determine how many squares of material are required for the roof the calculator above can handle all of this simply enter the length width and pitch and it will determine the size of the roof in squares.

Divide the first part of the ratio by 12 to work out the pitch. To convert between american roofing ratios and pitch degrees follow these steps. Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. 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.

A 12 12 pitch roof has a pitch angle of 45. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches. Check your results with the omni roof pitch calculator.

That measurement is the roof s rise. Measure the inches from the level s end up to the bottom edge of the rafter. Roof pitch calculator results explained. Marvel at your mathematical.

Technically roof pitch is the ratio of total vertical roof height the rise to total horizontal distance from wall to wall the span. After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually. Find the inverse tangent of the pitch to find the angle in degrees. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.

Although most homeowners do not need to measure pitch it still pays to understand this term. How roof pitch is calculated. That is the roof s rise. 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.

Knowing that will determine what your roof s pitch since the run is 12 inches by default. To accurately calculate the area of your roof you must first determine its slope or pitch. The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. It is often compared to slope but is not exactly the same.

First measure 12 inches from one end of the level and make a mark.