How To Figure Out The Slope Of A Roof

It is often compared to slope but is not exactly the same.

How to figure out the slope of a roof.

Let s say it is equal to 1 5 m. Take the area of the roof s footprint say it s 5 000 square feet and multiply 5 000 by 1 118. Even if you want to use a flat roof pitch calculator system you will be able to find one. 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.

If you want to know how to find the pitch of a roof then start with a calculator. The horizontal distance in the ratio will be 12 while the vertical distance is the measurement you took from the rafters. First enter the value of the rise and choose the unit of measurement from the drop down menu. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally.

The slope of your roof is the ratio of the vertical distance or rise of the roof to the horizontal distance or run. And that s the number you were looking for. To accurately calculate the area of your roof you must first determine its slope or pitch. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.

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. Calculate the roof slope. That gives you 5 590 square feet which is the actual area of the surface of the roof. Finally enter the value of the rafter length and.

Write the roof slope as the ratio of rise over run or vertical distance over horizontal distance. Pitch rise run 1 5 6 25. Calculate the rafter length substituting these values into the following formula. This is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares.

Outside of the u s a degree angle is typically used. Measure the rise of your roof. Calculate the roof pitch as the proportion of rise and run. And for a roof with a slope of 6 12 that number 1 118 is your roof slope multiplier.

For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. Here are the steps to follow for the roof angle calculator. For example if your tape measure found a 6 inch vertical distance to the 12 inch mark on your level the slope is 6 12 or 6 in 12. Rafter rise run 1 5 6 2 25 36 38 25rafter 38 25 6 18 m.