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LOL - I see what you mean! That would make sense.

JohnD, I tried burning a sample with a match and, to be honest, not a lot happened. It didn't really catch fire, though a little bit went a grayish colour.

Thank you for your reply - I've also noticed the letters 'FI....' on another bag (but I can't see what comes after that). The insulation will have been up there for at least 20 years, could be much longer. Obviously, I'm just concerned it's not something dangerous like asbestos.

Hi, I found what I take to be insulation material in my loft. It's a white material in long threads. Looks like it was originally in black paper bags (marked ASS and I can also see 'FI...' written on another part of a bag). Anybody know what the material might be? Thanks.

Hi, there is a patch of concrete on our bathroom floor that is always damp. I've dried it off several times, but the dampness reappears. I can't find a leak anywhere in the vicinity. There may have been a leak in the past from the sink, but could that still cause the patch of concrete to be...