🚀 go-pugleaf

I have sound problem in the 2 storyes residential building which never
happened when floors were finished up with carpet.
Recently a buyer asked to change floor finish from carpet to wood flooring
and since he moved in, the existing resident in downstair has been
complaining about the noise from the upstair.

I have to do something to resolve the problem urgently.

Original floor assembly was
- Floor finish (carpet or wood flooring)
- 3/4" gypsum concrete over
- 3/4" T&G wood panel sheathing over joists
- 4" batt acoustical insulation
- 2 layers 5/8" type'X' GWB on resilient clips.

I will be appreciating any kind of advice.
Recommendation of books, references on this kind of sound problem also to be
appreciated.

- Young K