Work is progressing well. For that I have to thank my mate John, who has come up here for a fortnight to help me get this knocked off (and kindly brought my Dad with him)
We have had discussions about coupling/non-coupling the inner walls to the stonework and we both see merits in either approach. John was a church organ builder (renovating the Albert Hall organ is on his CV) so knows a bit about sound, reflections, absorbtion etc.
My preference is still not to couple and after tomorrow/Thursday it will be too late as the plasterboard will be starting to go on.
Anyone with more thoughts on this?