Roof Area With Pitch

Includes a handy roof pitch multiplier table in rise run and degrees.

Roof area with pitch.

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Adding 1 gives us 1 1 9 10 9 then taking the square root gives us about 1 0541. The maths behind this number is that it is the square root of rise run 2 1. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally.

Some sources consider low slope to include 3 12 pitch roofs. The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. Notes to the table above. If asphalt shingles are to be installed on a low slope roof special steps are required to avoid short roof life and roof leaks.

Learn how to find the area of a sloped roof. 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. The incline or pitch of a roof can be easily measured with a level tape measure and a pencil. Watch this short video titled area of a roof instead.

Measuring the roof s pitch. For example if your roof s pitch is 4 in 12 you would divide 4 by 12. Low slope roofs are from 0 to 3 12 in pitch. So keeping with our roof pitch of 4 this gives us 1 9.

Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. It affects walkability as well as drainage and roofs in areas of high rain or snowfall tend to have steeper pitches. Roof pitch is used to describe the slope or angle of the roof. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.

If your number is 1 3 squared would yield 1 9. Once you have your roof s pitch divide the number by 12. Therefore mark off 12 inches on the level and place it down horizontally against the roof rafter. Add 1 then take the square root.

Learn how to figure out the roof pitch multiplier for any roof slope. 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. This would yield 1 3 next square your result. Calculating the area true if you want to get the exact area measurement for your roof you can follow these steps.

To accurately calculate the area of your roof you must first determine its slope or pitch. Roof pitch affects the actual area of the roof.