Yeah I am just bridging the gap.
I mean its literally the reason why we moved away from bare floorboards to having floor coverings.
Agree PIR will be far better but didn't exist not that many years ago.
Some of the ways to suspend glass fibre were interesting!
My floors are interesting. They are a slab covered in polystyrene with a screed on top. No idea how deep the poly is. I only know as when I was doing the kitchen/diner the other year I had the the skirtings all off and in one corner the screed wasn't quite up to the corner where I uncovered.
No idea how efficient they are but they feel cool to the touch in summer and winter. Certainly not cold as such.
Just reminded me talking about draughts i need to put a non return behind my cooker hood. Found out last year that the wind can push through!
The one I replaced that the builder had fitted it didn't seem to as it was about 80% blocked by them drilling the hole in the wrong place and having to force the pipe in.