Hi all! I hope this is the correct place to post this. I introduced myself on the forum yesterday and got some helpful advice on my project, but figured I should write up a proper post in the correct forum. I have a stone (rubble) house in Shetland that has been largely untouched since it was built, over 100 years ago! We've gutted the upstairs, in preparation for new stud walls / insulation. My question is, what setup will work best on such a building, which originally relied on the h