Hello!
I have a house from 1954 that is built with lightweight concrete. Now, I'm going to repair some damage on an exterior wall from the inside and I'm a bit concerned about the insulation.
The exterior walls are 28 cm thick, and through a damage, I can measure first 10 cm of lightweight concrete and then two cm of mineral wool before it becomes hard again.
Is it likely that there are more layers of wool, or is the entire insulation just two cm? 26 cm of lightweight concrete and two cm of mineral wool.