Prefabricated house, poor sound insulation

Can you simply put different glasses into the frames?

yes, it's no problem, but rather expensive. However, it brings a lot. A second layer of plaster doesn't bring anything. I would rather make a partition wall inside. That brings a lot in drywall construction.

yes, no problem, but rather expensive. But it brings a lot.

A second layer of plaster brings nothing at all. I would rather make a stud wall inside. That brings a lot in drywall construction.

Hello, would it also help to attach gypsum cladding to the interior walls?

Hello, would it also help to install gypsum cladding on the interior walls?

I think so, but better would be insulation and then drywall for appearance. However, you will probably have to invest about 10 cm per wall for that.

Nevertheless, I would like to inquire again whether there are special facade plasters that also contribute to sound insulation. Does anyone have experience with that?

Thank you for the response

By whom was the building acquired? Just because it is [BJ 2017] does not automatically mean that there is still a warranty (e.g., in the case of a used property when purchased from a private seller)...