@lumocolor said:
I suppose my key blocker remains: how can I be sure that others will agree that the noise is disturbing when the upstairs neighbour claims that no it is not disturbing?
It’s the laws of physics (and acoustics) – there is no way your upstairs neighbour can tell how annoying the noise is a) because they can’t hear how much their noise transmits to you and b) they can’t tell what your threshold of tolerance is.
I was thinking the best way is to get a AAAC accredited consultant preparing a report saying the noise is likely to disturb…but I would need to get his permission I am assuming to do a test from upstairs to downstairs plus there is a 1% chance the report may declare that the noise is actually not disturbing…
If the upstairs neighbour refuses the noise test then that plays in your favour. If the acoustic engineer declares the noise ‘acceptable’ then you are going to have to rethink your approach and maybe insulate the ceiling by some other means than a false or dropped ceiling.