From: Anthony Matonak on
James wrote:
....
> I've read about 2 different foams that may help - Icynene and
> AirKrete. Both are poured into the walls and expand making a vapour
> barrier. Small holes are made in the drywall and the material is
> poured from the top.

I've heard something about Icynene foam producing cyanide gas
when it burns. You might want to look into polyurethane foam
instead. Even there you might have to make sure they don't
use penta-BDE or deca-BDE for fire protection as there are
rumors it's a bit toxic.

The last time I looked at AirKrete it was very expensive.

Anthony