Ren25 - I haven't managed to progress on this - lockdown in Melbourne & work have held me up!
By co-incidence I have just flicked off an email to a chap…

was also thinking after doing some more research- the Kingspan AirCell InsulBreak over the top of the battens (I need to take the roof sheets off anyway to do the…

We have a mudbrick house in NE Melbourne. Roof is corrugated metal, raked ceilings with timber lining (not plasterboard). Need to remove old insulation as water has got in under…