How To Find Out Your Roof Pitch

Take the measurement of the vertical.

How to find out your roof pitch. Roof pitch refers to the amount of rise a roof has compared to the horizontal measurement of the roof called the run. 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. Rise run pitch where pitch is expressed in percent. For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally.

You ll need a level that is 12 or longer and a tape measure. First measure 12 inches from one end of the level and make a mark. To see how pitch impacts the look of a garage and changes cost click the design center button on our pole barn kits page. For more complex roofs you may need to calculate it section by.

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. The underside of a rafter on a overhang at the bottom of the roof 3. Roofing terminology used to describe roof pitch or slope include 7 12 7 12 7 to 12 7 and 12 7 on 12. How to calculate roof pitch.

If you want to know how to find the pitch of a roof then start with a calculator. Pitch is the incline of the roof represented as the ratio of rise to the span twice the run. For a roof with the ridge above one wall the span is the same as the run. Place the end of your level the 0 inch point of your 12 marking against the roof surface.

Even if you want to use a flat roof pitch calculator system you will be able to find one. Before taking any measurements you must first confirm that it s safe to walk on your roof. Rafter rise run from the pythagorean theorem. One method to find the pitch is to climb on the roof and measure the rise for a 12 run.

Pitch tan angle where angle is the roof pitch expressed in degrees. For example if the roof rises 4 feet and the span is 16 feet twice the run then the pitch is 4 16 or 1 4. The slope is the same as the pitch. 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.

The underside of a rafter in the attic. To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. Position your level against the roof until the bubble of the vial sits between two lines.