Discussion in 'Smoker Builds' started by dirt guy, Dec 28, 2009.

  1. dirt guy

    dirt guy Smoking Fanatic

    If one were to want to insulate his smoker, what is the best material to use, what's the cost (per sq. ft.), and where is it available?

    I had a buddy that built his own gun safe and fireproofed it with some kind of stuff designed for the space shuttle interior. He could have bought a whole safe for what it cost.
  2. carpetride

    carpetride Master of the Pit OTBS Member SMF Premier Member

  3. carpetride

    carpetride Master of the Pit OTBS Member SMF Premier Member

    Fibrex is another product that I have read about but I don't think it will survive if used around the firebox. I think it is only rated for 1400 F
  4. beer-b-q

    beer-b-q Smoking Guru OTBS Member

    Hopefully BBQ Engineer will be along and he can tell you what he used in his build...
  5. meat hunter

    meat hunter Master of the Pit SMF Premier Member

    Kaowool. Found all day on ebay from 1/4" to 2" thick by 24" long x 25' rolls. 1" is sufficient for insulating your firebox and smoker. BBQ engineer used the same stuff on his. Temp rated for 2100 or more. Same stuff used in kilns. This is the stuff I am using for my backwoods clone.
  6. philly single

    philly single Fire Starter

    Using the same stuff in mine. 1" in the smoker chamber and 2" for the firebox. Hopefully will have a break in smoke in a week or two so I can provide some feedback.

    But if you check out BBQ Eng's build thread, you'll see how well it contains the heat! Def not cheap though....
  7. rbranstner

    rbranstner Smoking Guru OTBS Member

    Are you looking for insulation that will be next to the flames so it needs a high fire rating or is it going to be going on the outside/inside of walls where it doesn't have to be a high temp material?
  8. nwdave

    nwdave Master of the Pit SMF Premier Member

    Kaowool is an excellent product, BUT, please, please adhere to the following. Wear a dust mask when cutting, placing or even just messing around with this stuff. In a past lifetime, I was involved with Stress relieving (welders know what this means) and we used Kaowool all the time. It'll handle the temps with no problem, HOWEVER, in the process of handling, cutting, whatever, it generates a very fine particulate, while not in itself hazardous, will leave you with a throat irritation for several hours. Kinda like fiberglass insulation. A simple dust mask is all that's needed.
  9. mballi3011

    mballi3011 Smoking Guru OTBS Member SMF Premier Member

    I don't kow the cost of it but it's a 3m product and it is a duct wrap for a commerical hood wrap. I comes in what ever widthes that you need and it's heavy duty wrap for a cooking hood ducts. The a/c contractor supplied it so check with one on your jobsite.
  10. mgnorcal

    mgnorcal Meat Mopper SMF Premier Member

  11. badfrog

    badfrog Smoking Fanatic SMF Premier Member

  12. I saw a Char Griller Duo that someone attached welding mat to (on the outside). I don't remember the specifics, but he was quite happy with it (and it looked really nice, too)
  13. I would use roxul personaly. you can hold a torch to it and it won't burn, and at the temps we use it will be more than enough.

  14. grillard likes this.
  15. marty catka

    marty catka Meat Mopper

    camper4lyfe, looks great! How well does it work for you? How low of ambient temps are you smoking in with that cover? How many blankets did it take to cover all of your smoker?
  16. that does look nice.. did u just bolt it onthere?
  17. I actually didn't do it. Someone from another forum did it (not sure if posting to other forums is allowed, which is why I didn't link to it).

    Edit: It took one 3x3 blanket for the chamber and one 3x3 for the side fire box.
  18. walle

    walle Smoking Fanatic OTBS Member

    That would be SuperWool. I think it's rated to 1800+. I too saw his Iron Maiden build and used that idea it to insulate my wood box. Yesterday I wrapped the rest of my smoker with it... been up since 4:30 this morning cuz I'm so excited to test it today!

    It is really good stuff, a bit pricey, and I used mine like BBQ E - between two metal walls. This stuff would not work if directly exposed to fire.
  19. timleo

    timleo Smoke Blower

    You didn't mention what kind of smoker you are planning to insulate, but I used some concrete board normally used for tile underlayment on my square brinkmann. Works great! Here's a couple of pictures that may help...
  20. if your firebox is outside the smoking chamber then do you have to insulate it as heavily?

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