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#1
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| Hi, I am looking for some help with the thicness to apply the mortar between firebricks, the guidelines indicate 1/8" maximum, but It will need to be thicker towards the outside of the dome where the bricks splay out. Is it okay to use a thicker joint here. I would welcome any help Carleton |
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#2
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| Yes you can use a wider joint at the outside, you will need to unless you go crazy with cutting and fitting. What mortar are you using?
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#3
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| Hi Thanks for the reply, I am using Vitcas heatproof mortar, Carleton |
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#4
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| From the Victas site: Victas heat proof mortar is suitable for all kinds of INTERIOR use, but must not to be used outdoors. This looks like a premixed air-set product. Some people have used this successfully, but it will remain water soluble. Better to get a dry refractory product if possible...
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#5
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| I will look for a dry refractory product as suggested, not easy to find in the Uk so far, Vitcas assured me it would be okay as long as it was weatherproofed. This is a great site, really helpfull. Carleton |
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#6
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| I'm with Drake on this. It's very difficult keeping an outdoor oven dry -- no matter how hard you try to weatherproof it. The issue is that the binder that holds the mortar together comes apart when it gets wet. Not good. James
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#7
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| Doesn't burning the wood and baking produce water vapor. Is it enough to damage the air dry mortar or are things too hot in there? Mark |
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#8
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| It's the rain, fog and mist. The mortar can't ever be exposed to water. James
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