I have already put 200mm of insulation between my rafters, and now I need to fix 80mm of Celotex under those rafters.
Since I should be able to do that by attaching the insulation to the bottom of the rafters, I am guessing that I don't need to use thermally broken fixings.
But I have been known to be wrong before - strangely. So I just thought I'd check.
Anyone got a suggestion as to which fixings I should use for 80mm Celotex?