hi not long from now we are going to be making a start on renovating an old farm house, the house has thick stone walls with no insulation. i am looking to put stud walls with celotex or something cheaper in the frame then put plasterboards over the top then get them skimmed. first question is how thick insulation should i use? i was thinking 2" so i could leave a little air gap against the wall, the second question is do i need foil backed plasterboards incase of any damp issues?
the other problem i'm going to have is the floors, they are solid with no insulation so are always cold, i was thinking of putting down dpc then insulating, ufh, screed and the finished floor. doing this is obviously going to raise the height of the floor which isn't really a problem height wise as long as its not too thick so would 2" of insulation with ufh clipped into that then 1" of screed and then finished floor be enough to get insulation benefits?
long winded i know but not quite sure
cheers
the other problem i'm going to have is the floors, they are solid with no insulation so are always cold, i was thinking of putting down dpc then insulating, ufh, screed and the finished floor. doing this is obviously going to raise the height of the floor which isn't really a problem height wise as long as its not too thick so would 2" of insulation with ufh clipped into that then 1" of screed and then finished floor be enough to get insulation benefits?
long winded i know but not quite sure
cheers
