Roof Area With Pitch

Learn how to figure out the roof pitch multiplier for any roof slope.

Roof area with pitch.

If your number is 1 3 squared would yield 1 9. This would yield 1 3 next square your result. Roof pitch affects the actual area of the roof. For example if your roof s pitch is 4 in 12 you would divide 4 by 12.

A roof pitch multiplier also known as a roof pitch factor is a number that when multiplied by the area covered by a sloped roof gives the actual area of the roof. Some sources consider low slope to include 3 12 pitch roofs. Learn how to find the area of a sloped roof. It affects walkability as well as drainage and roofs in areas of high rain or snowfall tend to have steeper pitches.

Calculating the area true if you want to get the exact area measurement for your roof you can follow these steps. Includes a handy roof pitch multiplier table in rise run and degrees. Low slope roofs are from 0 to 3 12 in pitch. Good roofing information from independent roof experts.

Therefore mark off 12 inches on the level and place it down horizontally against the roof rafter. To accurately calculate the area of your roof you must first determine its slope or pitch. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.

Adding 1 gives us 1 1 9 10 9 then taking the square root gives us about 1 0541. Add 1 then take the square root. Measuring the roof s pitch. Roof pitch is used to describe the slope or angle of the roof.

The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7. If asphalt shingles are to be installed on a low slope roof special steps are required to avoid short roof life and roof leaks. The incline or pitch of a roof can be easily measured with a level tape measure and a pencil. Once you have your roof s pitch divide the number by 12.

So keeping with our roof pitch of 4 this gives us 1 9. Notes to the table above. Roof pitch is a determining factor for cost of the roof as well as the roof area and the type of materials used. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.

The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. The roof s pitch is the number of inches the roof rises in 12 inches.