Surface schedule - window with reveal

alexliz — Tue, 27 Jan 2026 16:21:53 GMT

I have a wall from 0.0000 to 4.000, i.e. 4m tall. It's 4m long. I have painted the internal surface with Surface Painter, so I've got 4x4 = 16m² of painted surface.

Now, I add a 1m wide by 1m tall simple window, at a 10cm reveal from the internal wall surface. That means that around the window hole, I have a wall surface going into the reveal, the total of which is 4x(0.10x1.00) = 0.40m².

I have set up a wall surfaces schedule. It picks up walls whose surface differs from building material. I list the 'Exposed Area (By Criteria)' field. I expect to see in my schedule a total of painted surface for that wall equal to 15.40m².

But it lists it as 15.60m². That is 0.20m² more than I expected. What am I missing?

I have confirmed the following:

The window is 1m x 1m. Reveal is exposed 10cm around the window frame on the inside of the wall.

The schedule correctly measures the painted surface of my wall as 16m² when I have removed the window.

It also correctly measures it as 15m² when the window is replaced by an Empty Opening.

Thank you.

Re: Surface schedule - window with reveal

Lpalma — Tue, 27 Jan 2026 17:13:43 GMT

It could be the type and configuration of the reveal.

I hope this helps.

Re: Surface schedule - window with reveal

Yves — Tue, 27 Jan 2026 18:00:53 GMT

Unfortunately, Archicad also calculates these surfaces

Re: Surface schedule - window with reveal

alexliz — Tue, 27 Jan 2026 18:49:05 GMT

Thanks. So, I'm not going crazy.
Pity that after so many version updates, such an accurate tool is so erm... inaccurate. Unless there's a logic that I am not following.

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Surface schedule - window with reveal

Re: Surface schedule - window with reveal

Re: Surface schedule - window with reveal

Re: Surface schedule - window with reveal