Sparrowhawk Posted March 26, 2023 Share Posted March 26, 2023 I pulled back a layer of pink glass fibre to get to a cable and found this stuff. It's pre-1989 I think, when the house was reroofed from slate to tile as there's broken slate in it. Link to comment Share on other sites More sharing options...
ADLIan Posted March 26, 2023 Share Posted March 26, 2023 May be yellow glass wool. Waste product was ground to make fibres that were injected into cavity walls and blown into lofts. Can you see individual fibres? Link to comment Share on other sites More sharing options...
Sparrowhawk Posted April 1, 2023 Author Share Posted April 1, 2023 On 26/03/2023 at 12:24, ADLIan said: May be yellow glass wool. Waste product was ground to make fibres that were injected into cavity walls and blown into lofts. Can you see individual fibres? Thanks, I had another look today and yes it's got the shiny glass fibres in it. Will it have the same insulating properties as the glassfibre rolls in the loft or do I need to remove it and replace with other insulation? It's only in patches of the loft so looks like it's been taken out from the rest. Link to comment Share on other sites More sharing options...
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