How Do I Determine My Roof Pitch

How to measure roof pitch to measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil.

How do i determine my roof 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. One method to find the pitch is to climb on the roof and measure the rise for a 12 run. Roof pitch calculator results explained slope the slope of a roof is represented as x 12 where x is the number of inches in rise for every 12 inches of run. Take the measurement of the vertical.

This is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares. Before taking any measurements you must first confirm that it s safe to walk on your roof. Also referred to as roof slope or roof slant so what does the 7 12 in the example to the right mean. It can be assessed in two ways either as the angle the rafter makes with the horizontal or the proportion between the rise and the run of the roof.

For more complex roofs you may need to calculate it section by. The 7 means that the roof rises 7 for every 12 it runs. Check the surface of the. For a roof with the ridge above one wall the span is the same as the run.

Roof pitch is often expressed as a ratio between rise and run in the form of x 12. Make sure your have a 12 mark on your level. Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. First measure 12 inches from one end of the level and make a mark.

Divide the results by the number of 12 inch segments in your level. Some levels have markings already and in this case you are ready. You can also estimate a roof pitch by eyeballing it from the ground from the gable side with a level and ruler. The slope is the same as the pitch.

Roof pitch is simply the slopecreated by the rafter. For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally. Position your level against the roof until the bubble of the vial sits between two lines. Roof pitch calculator is determined by the number of inches it rises vertically for every 12 inches it extends horizontally.

Take a measurement of 12 inches using a level. You ll need a level that is 12 or longer and a tape measure.