# Exterior Wall Area Calculation

Go to solution Solved by Dermot,

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In testing the area calculation I found a 10x10 exterior wall is reporting 111 sq. ft.

I can't find any reference to mathematical adjustment from the original value, that should be 100 sq. ft.

Thoughts?

CA13

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It covers the floor system at the bottom.

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6 minutes ago, robdyck said:

It covers the floor system at the bottom.

I don't have a floor. As a test I simple drew a 10' wall, in elevation I made the height 10' = 100 square.

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2 minutes ago, HomesByDesign said:

I don't have a floor. As a test I simple drew a 10' wall, in elevation I made the height 10' = 100 square.

Definitely a difference between the materials lsit and the walls components.

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• Solution

Chief's calculations are 100% accurate.   It's just that it may not be calculating things the way you want it to or expect it to.

In the case of a single default siding wall that is 10' long by 10' high, you may note that the house wrap is 100 sqft and the siding is 111 sqft.  This is because the program is wrapping the siding around the ends but it does not do that with the house wrap.  The ends take about 11 sqft more siding.

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Fabulous,

Thanks Dermot.