Thanks for your speedy replies and advice. The boards we have down do seem pretty airtight. What I meant about fibre glass is that it is the material (it looks rough and whispy rather than the images of insulation I see on the web) but when he told me "the top would be glass fibre" I thought...
Hello, in the eaves of our loft we have non-insulated joists with thin board over them. We got someone in to put in loft insulation put they just laid horizontal strips of it on top of the existing board. My questions are
(1) Was this a waste of time? (I assumed the insulation would go between...