How To Figure Roof Pitch With Speed Square

Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run.

How to figure roof pitch with speed square.

It is often compared to slope but is not exactly the same. Photo 2 shows how to use the speed square to mark a 33 1 2 degree angle the same as you would need on a rafter tail for a roof with an 8 12 pitch. Marvel at your mathematical. Divide the first part of the ratio by 12 to work out the pitch.

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. Because of its compact size it is frequently used as a saw guide when cutting framing members as well as a layout tool for quick 45 and 90 degree cuts. Set the level on the edge of the speed square as shown below then place the heel of the speed square on a rafter or gable edge of the roof. Often you express roof pitch as the ratio between the rise and the run in the form of x 12.

Finding the pitch of a roof is simple with a speed square. Roof pitch refers to the slope which the rafter creates. To see how pitch impacts the look of a garage and changes cost click the design center button on our pole barn kits page. 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.

A 12 12 pitch roof has a pitch angle of 45. To convert between american roofing ratios and pitch degrees follow these steps. A speed square and level can be used to easily find the pitch of a roof. Roof pitch refers to the amount of rise a roof has compared to the horizontal measurement of the roof called the run.

Check your results with the omni roof pitch calculator.