- Thread starter Julesr6
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malcolm
& Clementine the cat
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Looks like Rocwool to me. Fibreglass I found was yellow and harsh to the touch. Rocwool tends to be more soft.
I've been using quite a few rolls of fibreglass insulation (Knaul EcoRoll) that has a very similar look - It claims to be made from recycled glass which is probably the reason for colour.
Thank you for your replies. I have found some old insulation under the newer insulation, looks and feels similar but in smaller pieces. Does this look ok? Thank you for your help. I think the white stuff is old lime mortar from when the tiles were back filled. 
Cubist
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Yes, that does appear to be scraps/fragments of the lime torching.
Regarding the old insulation. Thick accumulations of dust will cause the material to compress and will also block air movement into and through it. As a consequence it loses some/much of its effectiveness as an insulator and can also hold onto damp. Its always New Year Job - out with the old and dusty and in with new and dust free - and a tot of what does you good afterwards.
Regarding the old insulation. Thick accumulations of dust will cause the material to compress and will also block air movement into and through it. As a consequence it loses some/much of its effectiveness as an insulator and can also hold onto damp. Its always New Year Job - out with the old and dusty and in with new and dust free - and a tot of what does you good afterwards.
Cubist
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It's impossible to judge in my opinion but it is the most likely. Nevertheless, its wise to mask up, cover up, bag it up and get rid responsibly - oh, and a good shower afterwards while your clothes are in the laundry.
Flyfisher
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Agreed. Whatever it is (I personally doubt it's asbestos but without testing might as well assume the worst), you don't really want to be breathing it in.
One of the worst jobs in our renovation was to clear out a horrible attic with all manner of old insulation, some of which was dubious-looking old pipe lagging that I didn't dare get tested
I used a good quality mask with disposable FFP3 filters, stripped to underwear and tee-shirt and donned one of those disposable white 'scene-of-crime' overalls with hood and feet coverings, plus latex gloves. I limited myself to about an hour at a time before before stripping off in the shower and sealing all clothing in doubled-up heavy duty bin-liners, including underwear and filters. I also invested in a hazardous dust vacuum cleaner with H-class HEPA filters. Even then, I always positioned the vacuum cleaner near a window and used the standard 2m hose to direct the exhaust into the open air while using an 8m hose on the inlet to do the final stages of cleaning. It was a fairly horrible few days and possibly overkill, but a great relief when it was all finished and 15 years on I'm still breathing normally!
One of the worst jobs in our renovation was to clear out a horrible attic with all manner of old insulation, some of which was dubious-looking old pipe lagging that I didn't dare get tested
I used a good quality mask with disposable FFP3 filters, stripped to underwear and tee-shirt and donned one of those disposable white 'scene-of-crime' overalls with hood and feet coverings, plus latex gloves. I limited myself to about an hour at a time before before stripping off in the shower and sealing all clothing in doubled-up heavy duty bin-liners, including underwear and filters. I also invested in a hazardous dust vacuum cleaner with H-class HEPA filters. Even then, I always positioned the vacuum cleaner near a window and used the standard 2m hose to direct the exhaust into the open air while using an 8m hose on the inlet to do the final stages of cleaning. It was a fairly horrible few days and possibly overkill, but a great relief when it was all finished and 15 years on I'm still breathing normally!