Evets
Well-Known Member
I looked at these ovens before I started and the issue that kept me from going this way was the lack of insulation. The design simply has a refractory material (the fire brick) on the inside covered with a layer of regular brick. It would work, but if you are going through the effort to put together an oven, insulation will really help the performance.
Insulation between the slab and hearth bricks is as important as around the dome.