I am building a domed 42 in oven in SW Minnesota. Kind of time-restrained so I am working as fast and efficiently as possible. The 2 inch FB insulation board beneath the floor has gotten wet in areas. Will that be a problem or will it dry out with the first firings? I'm going mostly by the e-book plans. The plans call for 3 in of blanket insulation over the dome and then chicken wire, finishing with stucco. Is that going to work well or is it recommended now to add perlite/concrete in an added layer?? My last question deals with the structure that will be supporting the chimney. I obtained an 8 by 8 flue liner thats about 24 in long. I plan on mounting that on the arch. I included photos. Whats your opinion(s) on the strength of this arch to hold up the liner which is fairly heavy..maybe 35 or more lbs? The opening on top is the same size as the outside dimensions of the liner, with the 2 middle arch bricks bearing all of the weight. The 2 support bricks are positioned at an angle consistent with the arch angle. Any suggestions. Do you think the 2 bricks will hold it up or do I need more support here? Thank you in advance!
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