whenever i create a construction base on specific material ,U-value would change every time i simulate, reconnect wire or open file.
i test in several computers
Rhino 6 HB 0.064
P.S:this is another file that i tested in several system test.gh (606.3 KB)
I answered your question in your old post. You have to make sure every material has a different name (otherwise one material with overwrite the other). I would suggest writing the level on insulation into the name of the material as a good practice to avoid this situation.