Sound insulation on the ceiling

Hello, I would like to install soundproofing on the ceiling in a granny flat in our house. 1. So that you don't hear as much from below. 2. So that the people downstairs don't notice the stomping from my kids as much. I was thinking of attaching battens to the ceiling and then filling the spaces with Styrofoam (3-4 cm thick). Do you think this would help, does anyone have experience with insulating a ceiling from below afterward? It is a concrete ceiling with a 15 cm construction (screed). It should help, right, or is the work pointless? :confused: I would be grateful for any tips :)

sorry, ...

... just found the request now!

It cannot be meaningfully answered without additional information.

For that, you need, for example, the complete structure of the floor slab, including
thickness of the concrete component,
screed thickness,
bonded screed or floating screed,
edge insulation strip installed without gaps?
impact sound insulation yes (thickness?)/no
type of top floor covering (parquet, tiles, laminate, textile covering, ...)

Condition of the load-bearing walls:
wall construction (type of material and layer thicknesses from inside to outside?)

Penetrations of the floor slab:
chimney/flue
sanitary shafts
etc.

The ceiling cladding you have in mind does not bring any real effects!

KPS