Update on this for anyone remotely interested.... I did the work a few weeks ago and sound is reduced significantly.. still can hear the deep bass of his snoring & coughs slightly and but much better than before.

I think the exposed polished / stripped floorboards dont help matters


here are a few pics

Wall being taken down




Bare wall. The laths you see are his bedroom wall!



Dense fibre matting going in, ££££ and no give/play so has to be cut to perfection



Matting all in and resilient bars fitted



First layer of fermacel board (heavy shit!)



First layer on and sealed at edges. Soundbloc matting being glued on to first layer and then second layer of fermacell being added






Lot of fucking work for some old guys snoring eh!