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mpjfitz 02-07-2010 12:15 PM

expansion joint?

I've seen some examples (can't remember where!) of a gap between the inner dome and the cosmetic brick work. It sounds logical to have one I suppose.

Has anyone used one? what did you plug the gap with?

Any hints-tips will be appreciated


dusty 02-07-2010 12:50 PM

Re: expansion joint?
I think I understand your question.
Insulation goes on the outside of your oven bricks, then the cosmetic brick work. Lots of insulation. Then you can have a gap or not. I don't think it matters. The builders who used stucco to finish the top of the oven used no gap.
Hope this helps.


mpjfitz 02-07-2010 12:58 PM

Re: expansion joint?
Thanks for the reply ... maybe I should have explained my query better :)

I mean where the hearth and the chimney work meets the outer/cosmetic brickwork


Les 02-07-2010 01:24 PM

Re: expansion joint?

I didn't use one, but when you mortar the brick, you almost get one by default. The mortar isn't going to be solid between the two bricks. I did separate the brick from the flue about two inches and filled the gap with vermiculite/portland for insulation.


dmun 02-07-2010 02:11 PM

Re: expansion joint?
I just put a piece of foil to create a slip joint there. You could use the flat stove door gasket material if you wanted to get fancy. There's also a quarter inch version of the insulating blanket, but I'm sure you'd have to buy the whole roll.

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