#1  
Old 10-14-2012, 08:46 AM
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Default Oven floor insulation

My oven was built by a mason. The floor is fire birck over 3" mortar slab over corrugated metal. I want to insulate the undersurface which is the ceiling of a closed wood storage area. Any suggestions?
Joel
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  #2  
Old 10-14-2012, 09:46 AM
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Default Re: Oven floor insulation

I dont think that really is going to do much for you. You want to isolate the firebrick from the slab so that the slab doesn't absorb the heat from your firebrick.
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Old 10-14-2012, 02:46 PM
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Default Re: Oven floor insulation

Jeepiper
Thanks for the reply.
I can't do that since the oven is finished. Won't the slab store and release heat?
I have noticed that when I heat the oven to 900-+ I have to let the floor cool to 750+- Or the bottom of the pizza will burn.
If I put 8 loaves of bread in at less than 650 the oven temp drops quickly and I don't get the "burn" that provides that special flavor.
What are your experience?
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Old 10-14-2012, 02:52 PM
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Default Re: Oven floor insulation

Don't hire a mason to build an oven, hire an oven builder. You are pretty much SOL without a rebuild, but all is not lost, just accept it for what it is and learn to maximize what you have.
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Old 10-14-2012, 02:55 PM
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Default Re: Oven floor insulation

Thanks,
As my experience increases, my results become more consistent.
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Old 10-14-2012, 03:15 PM
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Default Re: Oven floor insulation

If you haven't already, buy an IR thermometer and learn the characteristics of your oven. After a while you won't need it, so buy a cheap one.
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Old 10-14-2012, 04:24 PM
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Default Re: Oven floor insulation

I have one and have had this oven for 2 years. I only seem to learn from my mistakes. It it works by luck, I don't know what is right.
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Old 10-14-2012, 04:27 PM
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Default Re: Oven floor insulation

If my oven had no floor insulation, I would build the fire on a grate and keep the ashes cleaned from the floor during heatup.
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Old 10-14-2012, 04:32 PM
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Default Re: Oven floor insulation

I think I am going to buy ceramic board and instal about 6" under the floor. That should be enough.
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  #10  
Old 10-14-2012, 04:36 PM
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Default Re: Oven floor insulation

Under the concrete slab is wasting money. If you can raise the firebrick and install a couple of inches BETWEEN the hearth and slab you are golden.
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