Your comments above re Vermont are a blinding glimpse of the obvious.
The TFG has their own building research group - The TTRAG and possibly they should be afforded their own forum / topic / threads where serious researchers can pose questions and maybe even help formulate answers just as we have started to do here.
Unfortunately the current forum moderators rarely show up to assist and possibly its time for the executives to review the workings of the whole TFG forums.
