Thanks for the reply.
>Did you want to board over it?
Yes, as I said, "I have been installing raised loft boarding using legs"
>Typically insulation is rolled out on top of the rafters like a new lawn
Well, it is rolled out in-between and subsequently on top of the joists. The rafters are what...
I've been upgrading my loft insulation.
1950s house.
I have joists that are about 130mm deep.
In between the joists, there was a thin layer of old glass fibre insulation and what looked like rockwool insulation over that.
The insulation varied in depth and was ~75mm deep at best, ie at least...