How To Tell The Pitch Of A Roof

Check your results with the omni roof pitch calculator.

How to tell the pitch of a roof. Simply mark a level at 12 hold it perfectly level and measure from the roof surface to your 12 mark this. To convert between american roofing ratios and pitch degrees follow these steps. The level should be at least 12 long. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot.

The term pitch has two different meanings when it comes to roofs. Example a the measurements are taken from on top of the roof. To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. Find the inverse tangent of the pitch to find the angle in degrees.

Knowing the pitch of your roof is useful when designing an addition installing skylights or cutting new rake boards. The 7 means that the roof rises 7 for every 12 it runs. When you need to determine your roof pitch all you need is a bubble level and a tape measure. Some carpenters consider it more correct to use the term slope for the steepness and use pitch to describe the roof s overall dimensions.

Marvel at your mathematical. Make sure your have a 12 mark on your level. 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. How to measure roof pitch.

The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. Roof pitch refers to the slope which the rafter creates. The example to right shows 2 different ways to determine or calculate roof pitch also called roof slope. Roof pitch is used to describe the slope or angle of the roof.

Divide the first part of the ratio by 12 to work out the pitch. A 12 12 pitch roof has a pitch angle of 45.