How To Tell The Pitch Of My Roof

Hold the level straight and level bubble centered and then measure the vertical distance down from the your 12 mark on the level down to the roof.

How to tell the pitch of my roof.

The 7 means that the roof rises 7 for every 12 it runs. Find the inverse tangent of the pitch to find the angle in degrees. Some carpenters consider it more correct to use the term slope for the steepness and use pitch to describe the roof s overall dimensions. First measure 12 inches from one end of the level and make a mark.

Example a the measurements are taken from on top of the roof. Any pitch higher than 9 12 is considered a steep pitch. Roof pitch refers to the slope which the rafter creates. Marvel at your mathematical.

Here s an easy safe way to determine the pitch from inside your attic. 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. Pitch is shown as a fraction which divides the rise by the span. If you are trying to learn how to measure roof pitch calculations accurately you should really consider the importance of using a calculator.

So a roof that rises six inches for every foot of run has a 6 in 12 slope. Finding roof pitch isn t rocket science it s simple geometry. You can t exactly get a ruler out to do it and guessing is just going to be suicidal in terms of the end product so if you are trying to learn how to determine roof pitch measurements you really do need to use a calculator. The term pitch has two different meanings when it comes to roofs.

It isn t necessarily a 12 inch run but the entire span. Pitch is a measure of the steepness of a roof. Check your results with the omni roof pitch calculator. The example to right shows 2 different ways to determine or calculate roof pitch also called roof slope.

Place the end of your level the 0 inch point of your 12 marking against the roof surface. Often you express roof pitch as the ratio between the rise and the run in the form of x 12. The pitch of the roof is determined by the vertical rise in inches for every horizontal twelve inch length. Simply mark a level at 12 hold it perfectly level and measure from the roof surface to your 12 mark this.

Let us show you how to accurately determine roof pitch using simple tools level and measuring. Most people use it to mean the steepness of the roof. Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. To convert between american roofing ratios and pitch degrees follow these steps.

A flat roof would have a 2 12 pitch while the average roof pitch would be between 4 12 and 9 12. A 12 12 pitch roof has a pitch angle of 45. To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil.