Haz
I recently heard about natural wool insulation while I was looking in a eco builders merchant locally here in the UK
It is made from sheeps wool and thats about all aparently. I think its new fleece, not recycled from old clothes etc. Aparently the sheep farmers cant sell their sheep fleeces easily for some beuracrappy reason so its a good new outlet for them.
I think wool wont burn readily as it comes from the sheep anyway, but this product might also have some additional fire proofing. It comes in batts (sheets) of various sizes and thicknesses. It is soft (no iritation like you get from glass wool or rock wool) And even if wool gets damp it still insulates.
The foam packaging peanut idea possibly not good health wise. If they burn during a fire (I assume that they are flammable??) they give off lethal fumes
