Originally posted by Adamk
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Do I need to buttress my side walls?
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Originally posted by Adamk View PostI am almost finished with the chimney, ( only the top cover is left ). I tried to keep the whole weight to the bare minimum in order to avoid the buttressing after all. It was a really hard work cutting those bricks but at least I managed to achieve what I wanted ..
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I installed my blanket insulation, a vermicrete layer, and the stucco before starting the heat drying process. I still have cracks. But, there was no turning back for me. Imo, the only ovens that don't have cracks are those that haven't been fired. You don't show a pic from the inside but, I bet it doesn't look that bad. Remember, the dome can't fall in on itself. I have been firing my oven for 7 years. My advice is to insulate, take your time on the further drying fires, and enjoy your oven .
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Originally posted by Gulf View PostAdam,
Sorry for the late reply. Assuming that is an uninsulated dome, yes, definately! You need as much distance as possibe for insulation. If, what is pictured, is blanket insulation covered by render/stucco....no worries imo.
I noticed even some smoke coming out from some cracks. Is that normal to happen or did I do something very wrong ? What do you suggest I do now put some refractory mortar to fill in the cracks ? I was planning on keeping the WFO burning the whole day today slowly and tomorrow fill in the cracks and put the insulation on. Is that ok or do I need to wait more in these passages ?
thanks for the guidance
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Adam,
Sorry for the late reply. Assuming that is an uninsulated dome, yes, definately! You need as much distance as possibe for insulation. If, what is pictured, is blanket insulation covered by render/stucco....no worries imo.
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Originally posted by Karangi Dude View PostWell done Adam, that flue / chimney certainly has a wow factor.
I love the way you decided to do it anyway and not worry about the buttressing, awesome job Mate
Cheers Doug
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Well done Adam, that flue / chimney certainly has a wow factor.
I love the way you decided to do it anyway and not worry about the buttressing, awesome job Mate
Cheers Doug
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Very nice! It looks like it will blend in great with the old Greek archetecture.
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Originally posted by zoolanderYou have done a really nice job with your brickwork thus far...I can't wait to see it all done.
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I chose a single wall pipe because I didn’t have enough space on my base and I was planning on leaving a small space around the pipe ( 0,40” ) and fill it with perlite and cement 10:1. Then build the bricks around that. All this process going on at the same time. I know that the space left between the flue pipe and the bricks is not enough for insulation but I don’t know if I can push it much more, maybe I could double that to 0,80 “ which in that case will make the round brick base arrive flush with the rectangular base underneath.
The option of putting an extra pipe ( galvanized or steel ) around the center one could be useful for me to function as a guide for building the bricks straight going up but I didn’t quite understand first if the bricks can actually stick with mortar on the steel pipe ( can someone use mega epoxy or is it not the case ?) and second if it’s better for them not to touch the steel pipe at all because of the difference in expansion. If the second reference is the case, I wonder if I do put a second pipe then because of the gap between the first one it shouldn’t get as warm in order to affect the bricks.
As you can see I am quite lost on this adventure at this point but I won’t give up . Please have a look at some further photos I am attaching including my confusing drawing ..
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Adam,
I thought long and hard about the exact same round chimney design that you are attempting. That was an option that I was exploring if I needed to extend my chimney heighth. I'm assuming that you like the brick look and want to continue that same look on up to the crown of your ss flue. There are several options if, you think think a little outside of the box. Like I did on my dome, I thought about a brick veneer. That is thinly sliced bricks like those used for flooring. I intended to get a larger circumference galvanized duct pipe and attach galvanized mesh with spacers and long sheet metal screws I was going to form a strong surface with 3/4" stuccco and glue the thin brick to that. A little grout and the look of a brick chimney would be there. The space between the ss flue and the outside galvanized pipe could be filled with a layer of blanket insulation or dry filled vermiculite. A double walled insulated pipe would work fine for this, but the single wall that you have will let you choose the largest round duct that will fit on your existing chimney base.
I will elaborate more, if needed, and you are interested in this option.
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