With some addional research I have found that...
it is not significant if insulation is touching inner wall or outer wall. The dampening effect is practically not significant...
Help with insulation. Most important is that insulation is in there. Is this true?
Since usually more thick insulation - around 50kg/m3 - is advised to use for filling the gap between mass - walls would it be better if existing insulation would be compressed a little bit - a few cm to achieve more density?
Someone?....
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