How Measure The Pitch Of A Roof

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

How measure the pitch of a roof.

For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally. To accurately calculate the area of your roof you must first determine its slope or pitch. If you do need to calculate the pitch an estimate or shortcut is usually more practical than measuring the roof s overall dimensions. 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.

Divide the slope by two to get the pitch. 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 measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run.

Roof pitch is used to describe the slope or angle of the roof. Roof pitch calculator results explained. First measure 12 inches from one end of the level and make a mark. 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.

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

If you are trying to learn how to measure roof pitch calculations accurately you should really consider the importance of using a calculator. Divide the first part of the ratio by 12 to work out the pitch. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. It is often compared to slope but is not exactly the same.

Angle the angle of a roof is the same as the roof s slope except instead of being. Check your results with the omni roof pitch calculator. After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.

Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. 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.