Sound insulation; mid-terrace house on the street side, room-to-room construction method

Hello!

Do you know the movie "Geschenkt ist noch zu teuer"?

Sounds like an interesting construction method. Whether cutting the screed at the wall to the neighboring house brings any benefit, I can't say for sure. Otherwise, a drywall shell anchored in the floor and ceiling (not to the wall) was already considered; I would avoid any cavities.

If you want decoupling from the floor: not 10 cm mineral wool, but 10 mm compressed mineral wool, if it is still available from Fermacell or other suppliers.

I would only think further about the window once the alternative ventilation is clarified (my CO2 monitor goes off after 2-3 hours with the window closed!).

Regards, Tomtom.

Just wanted to quickly report back: we have now had the work carried out. On the floor, the usual drywall floor panels with "Wolle" underneath were installed to acoustically decouple the room. The wall to the neighboring house was double-layered with stone wool, the one to the study was single-layered.

Result: quiet. The neighbor’s clock radio (not set to radio, but to "Beep-Beep-Beeeep") can no longer be heard in the bedroom, but in the study next door it sounds as if it is in the same room.

Regarding alternative ventilation (the window will remain for now, but a [Vorbaurollladen] will be installed), I am now opening a new topic.