Sorry for my terminology.
We have a plastered metal upright in the extension and when preparing for painting I found some blown plaster. Removing this I found a little rust and then the source of water ingress which has now been resolved and dried.
Next step is to replaster. But first to...
My downstairs neighbour after over one year since installation, has mentioned that he can hear me pee through their ceiling in multiple rooms.
I have listened and I agree you can hear a kind of gurgling when you pour water into the pan, but not when you flush.
He suggested the toilet has...