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SweetDJC

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Reply with quote  #1 
I have an outdoor brick oven Dome and want to encase the outside of it in concrete. Can I do this with regular concrete? I want to square it off in order to finish with stone veneers. Figure making a square form around base and filling with concrete would provide additional insulation for the structure.
BrickWood Ovens

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Reply with quote  #2 
If you did that, it would take FOREVER to heat the oven as the concrete would absorb the heat from the oven... 

While we don't have directions or instructions on how to build a frame (there are tons of places to view online), we would recommend building a steel structure frame, then attach cement board / Hardi backer board.  Once you have built a sturdy housing, you then fill the void with bags of Vermiculite or Perlite.  Just pour it right on top of the oven - right up to the top of the housing.

After it is filled, attach your roof system.

Once that is complete, you can attach your veneer to the cement board.


This will give you a perfectly insulated oven with AMAZING performance.  Just don't build a concrete housing as you described.  It will underperform and eventually crack / crumble as concrete is not designed for high-temps.
joef

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Would sand be ok to use for this since its cheaper? If not, is this what your referencing with perlite or is there something I'm missing?

http://www.homedepot.com/p/Viagrow-4-cu-ft-Perlite-VPER4/207112647
SweetDJC

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Reply with quote  #4 
Wow. Glad I saw this response. Was about to buy the high strength concrete and pour it. Thank you for your response and advice. Will do it that way instead. Metal stud frame & cement board then fill inside with vemiculite and finish with stone veneer outside.
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Don't use sand - it is not an insulating material like Vermiculite or Perlite.  It is better than concrete.. but not like V or P.


That bag of Perlite from Home Depot is exactly what you need.  Finding it in a 4cf bag can be difficult sometimes.

We get calls from people all over the country saying, "I can't find Perlite or Vermiculite in my area".


Uline will ship you 2 bags of 4cf for $30 per bag - https://www.uline.com/BL_3801/Vermiculite


Order Grade 2 or Grade 3
SweetDJC

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Reply with quote  #6 
Great! Thank you for all of the great information.
joef

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Thank you!
Viking17

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Reply with quote  #8 
Hello
This is my first post hopefully I'm in the right board.
I put brick veneer on the front of my oven but had no heatstop 50. So I used type S mortar will that be ok?
Or will the thin brick fall off?
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Reply with quote  #9 
Using Type S in the front is fine - 

It will get warm, but it will not get warm / hot enough to damage the mortar (the veneer is more than fine).


We've had many, many customers use Type S mortar for the veneer in the front and along the edge of the hearth cooking surface w/ no issues.

No worries - 
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