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    Laying new loft insulation over old

    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...
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    Laying new loft insulation over old

    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...
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