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Post by jonnycj on Mar 30, 2012 18:08:00 GMT
[/img]Hello all Progress is.... Progressing. My builder Brian is very excited about the project. He can pretty much turn his hand to anything and depending on how my build goes he may make wfo's a speciality service. Still undecided about whether to go barrel vault or Pompeii. We're just getting the base prepared at the moment and will decide over the weekend. My head says Pompeii, but it depends on how much space we have to work with. Probably looking at around 1.1m depth to the wall and height isn't really an issue. The base is reinforced concrete with block internals and stone facing.
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Post by jonnycj on Apr 2, 2012 18:33:45 GMT
Progress progresseth further (try saying that after half a shandy). Got the base pretty much built in block, faced externally with some old stone from the garden. I've also sourced a 1m stainless steel flue with cap from eBay for the princely sum of £12, this is nice and shiny and should make the oven look really professional once finished. I have the option of fitting a 45deg elbow at the bottom of the flue and was thinking of directing this towards the fire. This should help with smoke removal ? Also building an ashhole (that's ash hole) so that I can just brush the ash off the oven floor down into the void below where a metal pail will be waiting. Things will stall a bit for a couple of weeks after Thursday as my builder is on hold, but it'll give me a chance to finalise the design, order materials etc. Cheers CJ
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Post by bookemdanno on Apr 3, 2012 12:13:09 GMT
way-hey!!! Here we go with a new one!
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Post by jonnycj on Apr 5, 2012 10:35:23 GMT
It's coming along well. I'd been scratching my head on what to do about constructing the arch. What bricks to use, how many, tapered or square, what type of insulation etc etc. Luckily I phoned Liam at Kiln Linings and he's sorted me out with exactly what I need for my base dimensions. It's taken away probably a weekend of research and even then I'd have probably over or under ordered. That's the benefit of talking to the experts I guess. The arch will be constructed in tapered brick forming a perfect semi circle and this will mean minimal mortar use, very quick build time and most importantly, very little cutting ! Cheers CJ
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Post by cannyfradock on Apr 7, 2012 16:11:32 GMT
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Post by turkey on Apr 7, 2012 16:22:05 GMT
Ahh the spring has truely hit, we are seeing more and more builds start Looking very nice, love the odd shaped blocks giving a real old feel to the base. and is that a bbq station that will be built in or a nice large prep area?
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Post by jonnycj on Apr 7, 2012 22:59:12 GMT
Still undecided on whether to go for a BBQ station or prep area. Got plenty of space and the design is evolving day by day. Thanks for the comments - we were really lucky to have some good stone blocks left over from a patio area and they do give it a nice feel.
Things now on hold until a week on Monday, but "Liam's load" should have arrived by then.
Bear with me !
Jonny
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Post by jonnycj on Apr 11, 2012 18:02:29 GMT
It's all arrived ! Some very nicely cut fire bricks, fire blanket, cement and cal sil boards are now sitting by the pergola awaiting the return of Brian the builder.
I've ordered sufficient cal sil and blanket to enable me to play around a bit with the insulation.
I'm thinking of the following for the base - concrete slabs, fire blanket, tin foil, cement bed, cal sil, cement bed, fire bricks. Is it sensible having the fire blanket under the bricks or will it create a potential problem ?
How many tin foil barriers should I incorporate in the arch covering ? Do they have decent heat reflection properties or are they just there to prevent the fire blanket absorbing moisture from the cement & render ?
Thanks
CJ
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Post by turkey on Apr 11, 2012 21:25:09 GMT
I would not have a flexible layer under the structure so if you are worried about insulation cast a later of vermiculite cement and put the cal sil board on top of that. Heat rises so the extra thermal blanket on top will not be wasted :-)
re tin foil, no idea tbh, whilst it might stop the damp from the render remember it will also be sealing in damp in the arch itself so I would use only one layer so to not seal moisture in a pocket in the middle. That way there is a clear escape route for any water.
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wjw
valid member
Posts: 58
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Post by wjw on Apr 12, 2012 3:15:40 GMT
I love the way the bricks behind look. That fired black look is neat.
Bill
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Post by tonyb on Apr 12, 2012 11:08:38 GMT
I know that Alan Scott uses aluminium foil between the vault bricks and the concrete layer, I don't remember whether this was for thermal reasons or to provide a small expansion space. I'm sure I've read somewhere of concerns about reaction between the aluminium and concrete but again can't remember any details. Sorry
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Post by jonnycj on Apr 12, 2012 12:02:44 GMT
Liam at kilnlinings said to use foil on the vault exterior to stop absorption of moisture from the render to the fire blanket. Didn't know whether to add a few other layers, maybe in between layers of fire blanket ? Runners use it after doing a marathon, so can't do any harm I suppose.
Any damp sealed into the arch will evaporate after a few firings I'd have thought, as long as I don't have moisture between two layers of tin foil.
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Post by DuncanM on Apr 12, 2012 12:32:29 GMT
The foil is used in Alan Scott and Rado Hand designs, primarily to stop the concrete cladding from sticking to the bricks so that it allows for movement when heated. It will also help the firebricks from sucking the moisture out of the cladding too quickly.
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Post by Terry Hardwood on Apr 14, 2012 9:56:36 GMT
Coming along nicely there! Handsome looking brickwork if I mat say.
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Post by jonnycj on Apr 14, 2012 18:13:18 GMT
Thank you it's all down to Brian. If anyone Wirral based needs a wfo you need a Brian in your life ! He's back on Monday, so the oven should fly up. Mrs CJ kindly sorted the bricks into their respective sizes yesterday, so will post more photos on Monday.
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