My use case:   I'm 80% sure I want Timber Frame in the first place. But I have a few concerns (that will probably have to be addressed regardless of construction method, but let's take TF as a starting point):   1/ Acoustic Properties Nothing other than a meter of concrete will be perfect here, but I want to reduce sound travelling as much as possible between in particular my home cinema and any (bed)rooms above it. I think there's a lot of 'layering' needed, so