The reverse build.

[david s]

Re: The reverse build.

Include a thermal break between the inner and outer arch if you want to improve heat retention.

[Lburou]

Re: The reverse build.

Include a thermal break between the inner and outer arch if you want to improve heat retention.

David, would you mind defining a 'thermal break'?

I'm thinking about inserting about 5 or 6 insulated firebricks from right to left on the oven landing just outside the first oven arch....Is that what you mean?

[brickie in oz]

Re: The reverse build.

Ive already thought of doing that, is ceramic blanket good sandwiched in between?

[david s]

Re: The reverse build.

Yeah, I use only 10mm vermicrete, but it is way better than direct contact.Apart from reducing heat conduction=heat loss, it also provides space for thermal expansion of the inner parts of the oven which avoids pressure on the outer arch.

[brickie in oz]

Re: The reverse build.

provides space for thermal expansion of the inner parts of the oven which avoids pressure on the outer arch.

I had provided for expansion all around on the last oven, Ive seen what can happen to brickwork from the effects of the sun never mind a furnace..

Its not my work btw.