How To Tell The Pitch Of A Roof

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How to tell the pitch of a roof.

The 7 means that the roof rises 7 for every 12 it runs. Make sure your have a 12 mark on your level. The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. Often you express roof pitch as the ratio between the rise and the run in the form of x 12.

Roof pitch refers to the slope which the rafter creates. Here s an easy safe way to determine the pitch from inside your attic. To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. The example to right shows 2 different ways to determine or calculate roof pitch also called roof slope.

Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. Find the inverse tangent of the pitch to find the angle in degrees. Check your results with the omni roof pitch calculator. Knowing the pitch of your roof is useful when designing an addition installing skylights or cutting new rake boards.

Most people use it to mean the steepness of the roof. To convert between american roofing ratios and pitch degrees follow these steps. Roof pitch is used to describe the slope or angle of the roof. Some carpenters consider it more correct to use the term slope for the steepness and use pitch to describe the roof s overall dimensions.

How to measure roof pitch. Example a the measurements are taken from on top of the roof. A 12 12 pitch roof has a pitch angle of 45. The term pitch has two different meanings when it comes to roofs.

When you need to determine your roof pitch all you need is a bubble level and a tape measure. The level should be at least 12 long.