How To Determine Roof Pitch Needed

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.

How to determine roof pitch needed.

The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. Depending whether the roof area is measured horizontally possibly from a drawing or photograph a correction factor is necessary to determine the actual area of the roof. So you would need to pick the right option as most regular standing seam metal roofs will require a roof pitch of 2 12 or even 3 12 at a minimum. To convert between american roofing ratios and pitch degrees follow these steps.

Here are a couple examples. If you do need to calculate the pitch an estimate or shortcut is usually more practical than measuring the roof s overall dimensions. 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. Check your results with the omni roof pitch calculator.

Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally. Find the inverse tangent of the pitch to find the angle in degrees. Marvel at your mathematical.

Given pitch and a horizontal area measurement multiply the horizontal area by a correction factor corresponding to pitch provided in the table below to determine the. Angle the angle of a roof is the same as the roof s slope except instead of being. Roof pitch is used to describe the slope or angle of the roof. Divide the slope by two to get the pitch.

A 12 12 pitch roof has a pitch angle of 45. There are some standing seam metal roofing options available from atas and other manufacturers that can be installed on a roof with pitch of 1 12. Divide the first part of the ratio by 12 to work out the pitch. To accurately calculate the area of your roof you must first determine its slope or pitch.

Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. 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 calculator results explained. How roof pitch is calculated.