Then I began to 'tack' the semi permeable insulating membrane to the wall, using mastic. The fact is that just about anything will do for this job, as long as it 's impervious to water and will hold the membrane in place for long enough to get the battening in place,
Now we have a Sci Fi bedroom; NICE!
I've decided to go for lintels over the windows. They'll enhance the cottage look and stop the insulation falling out! Ones an oak beam I just happened to have hanging around and the other, an old fence post which I've planed and limed. EVEN NICER!!
Tomorrow, with luck I'll Get most of the battening up.
Fingers crossed.