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Hi Andre,
I intend to build a room in a room, and would like to build it with a double leafe system, mass air mass. How big does the airgap has to be? I can't find that in the book build it like the pros. An other question is if i can use the concrete wall(25cm thick) between me and the neighbours as the first mass? so it would become:
concrete wall - rockwool- air rockwool - drywall
ytong - rockwool- air rockwool - drywall
How thick and what kind of rockwool should i use?
best regards,
Peter
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