Roof Area With Pitch

Once you have your roof s pitch divide the number by 12.

Roof area with pitch.

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. The roof s pitch is the number of inches the roof rises in 12 inches. Roof pitch affects the actual area of the roof.

Some sources consider low slope to include 3 12 pitch roofs. If your number is 1 3 squared would yield 1 9. Calculating the area true if you want to get the exact area measurement for your roof you can follow these steps. Roof pitch is used to describe the slope or angle of the roof.

Includes a handy roof pitch multiplier table in rise run and degrees. Therefore mark off 12 inches on the level and place it down horizontally against the roof rafter. Watch this short video titled area of a roof instead. Roof pitch is a determining factor for cost of the roof as well as the roof area and the type of materials used.

It affects walkability as well as drainage and roofs in areas of high rain or snowfall tend to have steeper pitches. Add 1 then take the square root. If asphalt shingles are to be installed on a low slope roof special steps are required to avoid short roof life and roof leaks. For example if your roof s pitch is 4 in 12 you would divide 4 by 12.

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. Good roofing information from independent roof experts. Learn how to figure out the roof pitch multiplier for any roof slope. 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. The maths behind this number is that it is the square root of rise run 2 1. The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. This would yield 1 3 next square your result.

So keeping with our roof pitch of 4 this gives us 1 9. Notes to the table above. Low slope roofs are from 0 to 3 12 in pitch. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally.

Measuring the roof s pitch. The incline or pitch of a roof can be easily measured with a level tape measure and a pencil.