Insulation in Gravity fed charcoal pit

stumpjumper · Post by **stumpjumper** » November 9th, 2014, 4:55 pm

I did some research and fiberglass is rated to 1000 degrees. Has anybody tried that instead of mineral wool?

Puff · Post by **Puff** » November 9th, 2014, 7:23 pm

I wish I could just give you and answer but I can share some very recent data I have from my recent build. It is also a heavily insulated gravity feed, I had 12 sheets to use if needed so it is packed in fairly well. During the hottest part of the fire the firebox skin where the coals were was about 200 degrees f. The cook chamber was around 375. The outer skin was 53 degrees f. My insulation is rated about 1800 degrees and cost was about $16.00 a 2'x4' sheet 2" thick.

stumpjumper · Post by **stumpjumper** » November 9th, 2014, 7:26 pm

What did you use for insulation?

Puff · Post by **Puff** » November 9th, 2014, 8:23 pm

ROXUL ...sorry. It was closer to $10.00 a sheet.

cancerboyuofa · Post by **cancerboyuofa** » November 9th, 2014, 8:48 pm

Where can that be bought at? Online?

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The Czar · Post by **The Czar** » November 27th, 2014, 8:12 pm

PM Frank and he can tell you the cheapest place to get it ....

cancerboyuofa · Post by **cancerboyuofa** » December 2nd, 2014, 11:23 pm

Thanks, ill do that.

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The Czar · Post by **The Czar** » December 3rd, 2014, 6:46 pm

Keep in mind… I just got a report from his email system… Apparently it's been messed up… So give him some time to sort through it…

stumpjumper · Post by **stumpjumper** » June 25th, 2016, 5:25 am

After a couple of years of using it I have had no problems with the fiberglass insulation. Cheapest think I have found.

holyp · Post by **holyp** » June 26th, 2016, 2:59 pm

I've used ceramic wool. It's made for high temperature. You can use it only for the fire box area, and regular rock wool for the rest, as the cook chamber walls shouldn't get too hot

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Insulation in Gravity fed charcoal pit

Insulation in Gravity fed charcoal pit

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