Roof Slope Finder

If asphalt shingles are to be installed on a low slope roof special steps are required to avoid short roof life and roof leaks.

Roof slope finder.

Low slope roofs are from 0 to 3 12 in pitch. Then multiply the slope by 12 to get the rise. This is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares. If you want to know how to find the pitch of a roof then start with a calculator.

Roof pitch calculator results explained. Slopes greater than 18 12 are found on a frame roofs and some mansard style. Some sources consider low slope to include 3 12 pitch roofs. Locate the level s 12 inch mark.

Calculate the roof pitch as the proportion of rise and run. How do you calculate the slope of a roof. See low slope roofing. Use a level against the underside of the rafter you re measuring to get the most accurate value.

Pitch rise run 1 5 6 25. Even if you want to use a flat roof pitch calculator system you will be able to find one. The most precise way to find the roof s slope is by measuring it from the underside. 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.

Calculate the rafter length substituting these values into the following formula. First find the slope by finding the tangent of the degrees eg. If you know the angle of the roof in degrees you can find the roof pitch by converting the angle in degrees to a slope then finding the rise by multiplying the slope by 12. Measure the rise of your roof.

Let s say it is equal to 1 5 m. Slope tan degrees.