hi everyone I have the foundation poured and the blocks done. I am ready to do the hearth this weekend. I am using your plans for the 42" oven and I have a question about a product that I have access to. It is a material called "Smooth Kote" and I am considering using it to insulate the hearth. It is made of Portland Cement, Fire Clay, loose mineral fibers and silica. It is very light material in 45lb bags. It's used for refractory work as an insulation mix over firebrick and over mineral board. It is mixed with water like concrete and cures the same.......only lighter. I have a whole pallet full and really want to use it. I can't rationalize any reason not to, but this is the first oven I've done. If anyone knows of the product or can think of any reason not to use it, please let me know!!! I can use all the advise I can get...thanks in advance! Jerry
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hearth insulation question