How Do I Figure Roof 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.

How do i figure roof pitch.

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. Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run. To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. Angle the angle of a roof is the same as the roof s slope except instead of being.

You can assess this in two ways either as the roof pitch angles which the rafters make with the horizontal or the proportion between the run and the rise of the roof. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. After measuring the slope estimate the roof pitch by dividing the slope by 2. How roof pitch is calculated.

First measure 12 inches from one end of the level and make a mark. Roof pitch refers to the slope which the rafter creates. Roof pitch refers to the amount of rise a roof has compared to the horizontal measurement of the roof called the run. Often you express roof pitch as the ratio between the rise and the run in the form of.

The easiest way to do this is by accessing a rafter in your attic if you can. It is often compared to slope but is not exactly the same. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. Marvel at your mathematical.

A 12 12 pitch roof has a pitch angle of 45. To accurately calculate the area of your roof you must first determine its slope or pitch. To convert between american roofing ratios and pitch degrees follow these steps. Before you calculate roof pitch you ll need to measure the slope of your roof.

Here s an easy safe way to determine the pitch from inside your attic. Divide the first part of the ratio by 12 to work out the pitch. Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. Find the inverse tangent of the pitch to find the angle in degrees.

To see how pitch impacts the look of a garage and changes cost click the design center button on our pole barn kits page. 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. Check your results with the omni roof pitch calculator. The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed.

Roof pitch is used to describe the slope or angle of the roof. Homes and other buildings have roofs with slopes ranging from no slope or flat to very steep slopes.