Materials list, wall surface & windows.

[AdrienS_FX]

Hi, i was recently trying to use the material list to evaluate how many sq m wall surface i have in a room. 

Despite the bug that have been discussed in the forum (interior trim/color doesn't appear in room material list ) there's another problem: 

 

Placing a window or a door, doesn't change de color or painted surface evaluation. 

In the remodeling we do right now, this is crucial since all the room have some large fixed windows. The painted surface needs to be calculated regarding the real surface and not the total wall .

 

Is there any way to get the right wall surface for painting ? 

 

Thanks in advance

Adrien