Hi all,
My 43" dome is almost fully enclosed (should be this weekend at least) and now my attention is turning to the outer arch and chimney. I need advice on the best way to approach this.
I have clay bricks cut and ready to build the outer arch, along the same design as the inner arch. This will leave a nice vent between the two arch's and the two arch's should support the chimney ok I am guessing. I notice a lot of builds use firebricks for the outer arch and chimney, then a facade of clay bricks in front for looks. I want to avoid the firebrick outer arch and chimney to reduce the dept of the entrance and I want an exposed clay brick chimney for looks.
Will I have any heat related issues with just using clay bricks for the front arch and chimney instead of firebricks?
Will I have any cracking issues with the mortar between the firebricks and the clay bricks, considering that the chimney will be clay bricks and will sit on top of the inner firebrick arch and an outer clay brick arch. Will the mixing of birck types in a reasonably high heat area pose any issues I should address?
When I lay the clay brick outer arch & chinmey should I use refractory cement or standard mortar. So far the whole dome hase been constructed using refractory cement as mortar.
I read on the fb forum a bit that the transition between firebrick and clay brick seems to be a common area of cracking and I want to minimise the chances of this.
Any advice from those in the know? I have attached a few photos below of the inner arch...
My 43" dome is almost fully enclosed (should be this weekend at least) and now my attention is turning to the outer arch and chimney. I need advice on the best way to approach this.
I have clay bricks cut and ready to build the outer arch, along the same design as the inner arch. This will leave a nice vent between the two arch's and the two arch's should support the chimney ok I am guessing. I notice a lot of builds use firebricks for the outer arch and chimney, then a facade of clay bricks in front for looks. I want to avoid the firebrick outer arch and chimney to reduce the dept of the entrance and I want an exposed clay brick chimney for looks.
Will I have any heat related issues with just using clay bricks for the front arch and chimney instead of firebricks?
Will I have any cracking issues with the mortar between the firebricks and the clay bricks, considering that the chimney will be clay bricks and will sit on top of the inner firebrick arch and an outer clay brick arch. Will the mixing of birck types in a reasonably high heat area pose any issues I should address?
When I lay the clay brick outer arch & chinmey should I use refractory cement or standard mortar. So far the whole dome hase been constructed using refractory cement as mortar.
I read on the fb forum a bit that the transition between firebrick and clay brick seems to be a common area of cracking and I want to minimise the chances of this.
Any advice from those in the know? I have attached a few photos below of the inner arch...
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