#1  
Old 03-09-2012, 01:43 PM
Apprentice
 
Join Date: May 2011
Location: Eastern Idaho
Posts: 177
Post 3" Ceramic Fiber Board

While I was calling around for ceramic fiber board I spoke wtith someone at McGills Warehouse in So Cal and he actually told me that he would advise against buying the 3" board because of the lack of uniformity throughout the board. He recommended that if I wanted 3" of insulating board I should use a combination of other sizes to get it. Has anybody else heard this? Has anybody used the 3" board? Any help and input would be appreciated.

Thanks
Nate
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  #2  
Old 03-11-2012, 05:32 PM
GianniFocaccia's Avatar
Il Pizzaiolo
 
Join Date: Jun 2009
Location: Disneyland, CA
Posts: 1,517
Default Re: 3" Ceramic Fiber Board

Hi Nate,
I haven't purchased anything from McGill's but have been aware of them and their refractory product offerings for a little over a year now. You might want to contact Harbison Walker (ANH Refractories) regarding the availability of Insblock 19. This is a ceramic fibre board rated to operate up to 1900F. A number of builders have reported good results with this board and I would too if my oven was finished. They have distribution centers (open to the public) in Salt Lake City, Seattle and Portland.
John
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Old 03-15-2012, 06:04 PM
Apprentice
 
Join Date: May 2011
Location: Eastern Idaho
Posts: 177
Default Re: 3" Ceramic Fiber Board

Hey John,

thanks for the response. I contacted Harbison Walker about their firebrick a month or so ago and it was pricey ($4.00/brick) but I didn't even think to check into them for the insulating board. I will have to look into that. For as many times as I have read your build thread I should probably remember how thick your insulating board is but I don't. Did you go with 2" or 3" insulation under your floor?
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Old 03-15-2012, 10:46 PM
Journeyman
 
Join Date: Jun 2008
Location: Melbourne Australia
Posts: 399
Default Re: 3" Ceramic Fiber Board

3" or 75mm Calcium Silicate board is a better option if it is on the base of your oven.
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Old 03-16-2012, 04:54 AM
GianniFocaccia's Avatar
Il Pizzaiolo
 
Join Date: Jun 2009
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Default Re: 3" Ceramic Fiber Board

Nate,
I have 2" of board on top of 3 1/2" of vermicrete.
John
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  #6  
Old 03-16-2012, 02:31 PM
Mike D's Avatar
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Join Date: Oct 2010
Location: Berkeley, Ca.
Posts: 342
Default Re: 3" Ceramic Fiber Board

-Hey John so do I. Can one have too much insulation?

-Nate, my 2" board was not exactly the same thickness ether. I had to level it with the sand/firebrick mix anyway.

Mike
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Old 03-16-2012, 05:04 PM
Laborer
 
Join Date: Sep 2009
Location: Harrisonburg, Virginia
Posts: 62
Default Re: 3" Ceramic Fiber Board

Hey, Nate.

I recently bought four inches of cal sil board in different thicknesses. The boards measure 24" x 39.4" at 1.5" and 1" thick. They were out of the two inch at the time.

I did it like this so I could alternate the seams when stacking the boards. Hopefully I can squeeze every last drop of heat for as long as possible. Plus I got it for a good price. That is why I went with four inches instead of the standard two.

I have not set bricks on them yet, but the boards seem fairly consistent by eyeballing them. Although that and fifty cents may get you a cup of coffee.

Good luck.

David
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Old 03-17-2012, 10:31 PM
Apprentice
 
Join Date: May 2011
Location: Eastern Idaho
Posts: 177
Default Re: 3" Ceramic Fiber Board

John - thanks for the info.

David - let me know how that goes with the 4" of board.

And NO you can't have too much insulation. But the insulation can cost so much that I can't afford to go to 3" or 4" so that is what I am trying to figure out. Thanks for all the info!

Nate
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  #9  
Old 03-18-2012, 04:53 PM
Laborer
 
Join Date: Sep 2009
Location: Harrisonburg, Virginia
Posts: 62
Default Re: 3" Ceramic Fiber Board

Hey, Nate.

Just out of curiousity how much was the three inch ceramic fiber board? When I was first searching for materials I had a bunch of different prices for boards.

Forno has really good pricing compared to other dealers I talked with and shipping should be better being you are out west.

David
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  #10  
Old 03-18-2012, 05:17 PM
Apprentice
 
Join Date: May 2011
Location: Eastern Idaho
Posts: 177
Default Re: 3" Ceramic Fiber Board

David

For two sheets of 2' x 3' x 3" board it was $117.06. I didn't think it was that bad of a deal. What do you think? Here's the link to it (and yes I saw it is out of stock).

McGills Warehouse Online Department Store,HF103 3in Ceramic Board

Nate
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