In message , Terry
writes

"Tim Lamb" wrote in message
...
In message , The Natural Philosopher
writes

Any pointers to how others have approached this problem?

regards
--
Tim Lamb
.
Why don't you look at how we build wood frame houses in Canada!

These commonly have 2 by 4 or 2 by 6 wood stud walls which are heavily
insulated.

Thank you. An excellent description. The UK does not experience the
extremes of weather found in Canada but we think we win on humidity.

I am interested in the purpose of the permeable paper?

regards

--
Tim Lamb