ᐅ Sound Insulation Assessment for a 1965 Semi-Detached House

Hello,

we have found a house that we would like to buy.
It is a semi-detached house built around 1965, constructed with solid masonry and fully basemented.
According to the building description, the interior walls/fire protection wall are made of limestone. These are plastered and covered with woodchip wallpaper.
According to the original architectural plans, the wall between the two semi-detached units is 24 cm (9.5 inches) thick. Floating screed has been installed on the floor.

How would you assess the sound insulation towards the neighboring house?

We are concerned that the soundproofing might not be sufficient.

Thank you very much.

24 sand-lime bricks are the best choice you can make for soundproofing!

tomtom79 schrieb:
24 cm (9.5 inches) sand-lime brick is the best you can get when it comes to sound insulation!

That sounds positive.
We have been focusing heavily on semi-detached houses. In almost all cases, there was a separation joint between the two units.
That makes us quite uncertain.
According to the plans, the 24 cm (9.5 inches) sand-lime brick wall is shared with the neighbor.
Is that really sufficient?
We don’t want to have to listen to the neighbor’s conversations, coughing, or anything else 😉

Hmm, so no separation of the walls? Strange.

Is it unreasonable to simply test it out? The neighbor could turn up the music, and you could listen from next door.

Unfortunately, this cannot be determined from the architectural plans.

Attached is an excerpt from the architectural and construction plans.