I`m ready to go but I need advice on the ceramic board,, I found a supplier near me[ I live in Al.] that has the 2 inch board in 24 by 48 inch size . I can cut this to fit my interior space on a 36inch oven . How ever on all the photos, it shows this also going under the exterior wall of fire bricks. Is this necessary ??? or can I just cut the ceramic board to fit the center floor and run the fire bricks right on the concrete I have a 5.5 inch thick slab poured for a base I guess I was wondering if the fire brick would transfer enough heat to crack the slab .. I doubt that I would have a heat loss .I would appreciate any thoughts on this ..
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