Re: wall thickness
ok, i was at home depot last night, they had NO R15.............i ended up getting R-19 that is 6in thick and NO backing on it.........it was $28 bucks, with plenty to do my oven build.
They had some High temp insulation, in thickness up to 2", it was in these 4x8 sizes, and it looked kinda like styrafoam. they tried to talk me into it, but i knew nothing about it and i had heard R15 worked so for sure R19 would.
But someone DEFINITLY needs to check into that other stuff, come to think of it, 2" walls would be nice.
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