Different materials in the cross section, but why are they being merged?

[LeeJaeYoung]

This is the window I made.
Why does this phenomenon appear in cross section?
The material is the state designated as gs_sash_mat and gs_glass_mat, respectively.

2-sash Sliding Window 26

GS door: glass fill - Graphisoft Community

In this case, prism_ status code is set to 5.

So how should the frame and sash be treated?

[kuvbur · Accepted solution]

In section body with same fill merged. You need set different fills in code, with sect_fill

[Piotr Dobrowolski]

or...make a gap between elements.

[LeeJaeYoung]

But what about in standard windows?

[LeeJaeYoung]

I thought it would be possible to use a different section fill for the surface, but I found out that wasn't possible.
Other surfaces have also been merged.
So, I decided that I had to use sect_fill.

[Peter Baksa]

The default frame cut fill is "Background", sash cut fill is "Air space". They look the same, but are different attributes, so they don't merge.

[LeeJaeYoung]

thank you I understand that the section material should be different, and I decided to create and use BG_Frame1,2 and BG_Sash.
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