Hi

I'm busy rolling out Rockwool as per the BCO's instructions, 100mm
between the joists and then another 150mm transversely over the top.
God what a job. Haven't done this in 20 years, but it's as bad as I
remember it. No, I'm lying, it's worse, because (a) my joints are 20
years older and (b) back in them days you only needed 50mm insulation
or something.

So I'm now building up a veritable sea of glass fibre up there. No
way of telling where the joists are now, so heaven help me if I ever
need to access it again.

The Rockwool instructions helpfully tell you to avoid covering
electrical fittings, junction boxes etc - but how the hell are you
supposed to do that? I've been attaching my cables and any jct boxes
to joists, but these have now vanished. I have visions of attaching
little timber masts to the joists, to attach the jct boxes etc just so
I can see them above the Rockwool! This can't be an unusual
problem...

David