thundercloud wrote:
Look into Icynene foam spray. It does not off gas nasty chemicals and is fire resistant. Here is a link Icynene
hmmm from that website you linked:
"Do I Need a Thermal Barrier?
In an occupied space, you need a thermal barrier adjacent to either low density or medium density foam - this could be ½ inch gypsum board, or a code-prescribed barrier per R316.4, depending on the spray foam section of your local code. See each Icynene spray foam product to check which paint-on or spray-on thermal barriers can be used.
If the space is unoccupied, you don't need a thermal barrier.
"
