Hi,
We have a gas fireplace (which is great.. it gives off alot of heat and
we like it .. and use it in moderation)... however in the dead of winter
there is cold air which comes wipping in from the wall behind the
fireplace. I ripped the fireplace out (actually just lifted it and
pulled it out) and see it's just the outside wall of the house.. no
insulation. What can I use to insulate back there that is not going to
have problems because of the heat from the fireplace?