How Do I Work Out The Pitch Of My Roof

One method to find the pitch is to climb on the roof and measure the rise for a 12 run.

How do i work out the pitch of my roof. Enter any angle or fraction of angle to find pitch. Divide the results by the number of 12 inch segments in your level. Here s an easy safe way to determine the pitch from inside your attic. Before you calculate roof pitch you ll need to measure the slope of your roof.

You can also estimate a roof pitch by eyeballing it from the ground from the gable side with a level and ruler. This will allow your project to carry the depth and detail in the roof that you wanted as well as make sure that it will maintain a sturdy and effective nature throughout. As aforementioned there is no standard pitch of a roof. Enter any pitch or fraction of pitch to find angle.

While pitch and slope are used interchangeably they are not the same span also known as gable width this is based on the total footprint of the house and refers to the distance between two exterior walls. If you can t get to your attic you can measure slope on your rooftop as long as it s safe to go up there. The easiest way to do this is by accessing a rafter in your attic if you can. Simply mark a level at 12 hold it perfectly level and measure from the roof surface to your 12 mark this.

Rafter rise run 1 5 6 2 25 36 38 25rafter 38 25 6 18 m. After measuring the slope estimate the roof pitch by dividing the slope by 2 if you have a simple gable roof. Example a the measurements are taken from on top of the roof. Even if you want to use a flat roof pitch calculator system you will be able to find one.

If you want to know how to find the pitch of a roof then start with a calculator. On the roof hold the level perfectly level and measure the height from the roof to the level 12 inches away from where the level touches the surface this will be the rise. Measure the rise of your roof. First measure 12 inches from one end of the level and make a mark.

The 7 means that the roof rises 7 for every 12 it runs. Pitch this is the incline of the roof expressed as a fraction. Pitch rise run 1 5 6 25. Calculate the roof pitch as the proportion of rise and run.

To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. Express roof pitch as the ratio of the amount of the vertical rise of a roof or rise over the corresponding horizontal distance or run you write the pitch assuming a run of 12 inches thus the ratio would describe how much a roof rises for each foot of the run. For example if you used a 24 inch level and your measurement was 12 inches the pitch in your roof is 6 in 12. Let s say it is equal to 1 5 m.

Calculate the rafter length substituting these values into the following formula. The example to right shows 2 different ways to determine or calculate roof pitch also called roof slope.