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HogFan
06-09-2012, 01:22 PM
How is an insulated firebox typically designed on an offset smoker? Are most double walled steel that use air as insulation? If so, is thicker steel typically used on the interior wall?

ssbbqguy
06-09-2012, 05:31 PM
I've used and still do firebricks. There is rockwool type insulation and several others. Air is not as efficient as using something in the space.
Steve.

garbageman59
06-09-2012, 06:35 PM
I use Isokern. A proprietary cast fireplace material that is distributed worlwide by a local manufacturer.

See the details here. http://www.bbq-brethren.com/forum/showthread.php?t=116542

http://www.bbq-brethren.com/forum/picture.php?albumid=504&pictureid=4225

garbageman59
06-09-2012, 06:38 PM
And this is what I'm putting around my charcoal shoot when I get around to it......

Kaowool blanket. Good to 2300 degrees.

http://www.clay-king.com/kilns/kiln_accessories/kiln_brick_and_kaowool_blanket.html