ᐅ Sound insulation for toilet cistern

Hello,
our toilet is located directly next to a bedroom. The cladding (installation wall) has not been built yet. I received a suggestion to improve sound insulation—especially for the noise caused by the refilling water when flushing—by placing a styrofoam panel between the toilet cistern and the wall. Are there any opinions on this? Thank you.

It won’t help.

What kind of wall will it be? Material and thickness?

hanse987 schrieb:

What kind of wall will it be? Material and thickness?

11.5cm (4.5 inches) Poroton

Hausbaer schrieb:

11.5 Poroton

You can forget about 11.5 Poroton right away. Sound insulation is zero. It’s like a straw fence.

Bookstar schrieb:

You can forget about 11.5 Poroton bricks. Sound insulation is zero. It’s like a straw fence.

It’s already in place. The question is whether additional insulation is added.