Hello
I have a 1970s house where the exterior wall has the following construction (from outside to inside):
1. Brick
2. Air gap
3. Asfaboard
4. 120 mm stud frame and insulation
5. Moisture barrier
6. Tretex (Jävla skräp)
Does such a wall meet EI30?
If it had been gypsum on the wall, I would have been sure. But unfortunately, it's not ;-)