[fsucpa]

actually, I would have thought quite the opposite, in that a box-like housing could easier contain the what appears to be a pain in the butt loose vermiculite, as opposed to the igloo, where to pour some kind of vermiculite layer over the ceramic blanket insulation, and then hope to seal it with that final mud layer would seem to be much harder. By the way, that mud layer that goes on after the ceramic blanket/vermiculite, why are we using that final mud layer. Seems like a couple of extra layers of blanket, then chicken wire, inside a box like structure, bam, your done? Obviously, you can tell I am a newbie?

Tom

p.s.- also, can someone comment on the relative costs of using said extra layers of insulfrax vs insulfrax and vermiculite. In addition, could someone also comment on the use of insulfrax vs kaowool, which is also a ceramic blanket,vs " Safe" non-cermic blanket, described as "This is the "Body Fluid soluable" non-ceramic fiber blanket" "This Roll is the Superwool 607 Max product rated at 2192 F degrees continuous use". this stuff seems to be half the cost of the kaowool.

So, again, that is kaowool vs insulfrax vs non-ceramic blanket vs insulfrax/vermiculite.

Thanks for help with this seemingly complicated subject.