Originally posted by Laurentius
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Although it wasn't on the plans I am going to look at covering the hearth with hebel blocks (an inch thick). Any taller than this and my pizza oven is getting too high and will start to look out of proportion and strange. It will at least be better than just the fire blanket on top of the bare concrete.
Laurentius' comments about the fire blanket packing down didn't occur to me, however in the owners instructions they say "don't worry if the firebricks sit up at first, they will drop down and fit snuggly after a few firings". What they are actually saying is "the fire blanket will compact with use and as such will be less effective as insulation". Considering we are likely to be at this house for many, many years to come it is worth doing it properly. I'm not going to get a second chance at insulating the floor!
Duckman
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