Hi all,
I live in the UK, and hope to build a wood-fired oven soon using the Ephrem Four a Bois 2061.
Has anyone on here got any experience of this particular dome?
My main concern is what type of insulation to use underneath the dome; it will probably be mounted on a concrete paving slab on a brick plinth. I've seen various things suggested, from sand, to mortar, to vermiculite board. I am worried that if I use mortar, then something might crack if the dome and slab expand at different rates. I appreciate the need to prevent heat-loss through the base, but I also read that the base of the dome should run a little cooler anyhow. What if I used nothing underneath the dome? Would the heat cause the slab to explode? I figure that if I use sand, the constant thermal cycling might cause the dome to sink downwards over time as it expands and contracts. Also, if I just rested the dome on insulating board, what would stop it moving around inside the outer enclosure over a period of time? To me, the best thing might be heat-proof silicone, which would seem to be good for holding the dome in place whilst allowing a certain amount of expansion/contraction.
Any advice here would be gratefully received!
Rich
I live in the UK, and hope to build a wood-fired oven soon using the Ephrem Four a Bois 2061.
Has anyone on here got any experience of this particular dome?
My main concern is what type of insulation to use underneath the dome; it will probably be mounted on a concrete paving slab on a brick plinth. I've seen various things suggested, from sand, to mortar, to vermiculite board. I am worried that if I use mortar, then something might crack if the dome and slab expand at different rates. I appreciate the need to prevent heat-loss through the base, but I also read that the base of the dome should run a little cooler anyhow. What if I used nothing underneath the dome? Would the heat cause the slab to explode? I figure that if I use sand, the constant thermal cycling might cause the dome to sink downwards over time as it expands and contracts. Also, if I just rested the dome on insulating board, what would stop it moving around inside the outer enclosure over a period of time? To me, the best thing might be heat-proof silicone, which would seem to be good for holding the dome in place whilst allowing a certain amount of expansion/contraction.
Any advice here would be gratefully received!
Rich
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