#11  
Old 01-20-2008, 08:42 AM
Peasant
 
Join Date: Oct 2007
Location: EVESHAM, UK.
Posts: 39
Default Re: WFO Progressing Nicely, but Help Needed.

Hi Jeff,
We live in Evesham, about two hours N.W of London. I will buy some vermiculite tomorrow and set about the insulation. I have done the floor this afternoon. 65mm of fire proof insulation.
I tried a blow torch on it for about 5 minutes and no damage, so it should be safe.
Next step is to coat the whole lot in vermiculite, about 50-75mm thick I think.
I'll post agin tomorrow when the next stage is done.
Cheers
Nick
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  #12  
Old 01-20-2008, 08:43 AM
Peasant
 
Join Date: Oct 2007
Location: EVESHAM, UK.
Posts: 39
Default Re: WFO Progressing Nicely, but Help Needed.

Hi Acoma,
I didn't think a chimeny was necessary outdoors! I thought that once the fire got going the smoke was minimal as long as you use dry wood.
What are the two curing methods?
Cheers
Nick
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  #13  
Old 01-20-2008, 09:19 AM
Acoma's Avatar
Il Pizzaiolo
 
Join Date: Sep 2007
Location: Reno, NV
Posts: 1,023
Default Re: WFO Progressing Nicely, but Help Needed.

With the flue, chimney, your smoke is drawn up and away, not in your face. A very high percentage of these outdoor ovens have the chimneys for that very reason.

Method A
http://www.fornobravo.com/forum/f16/...uring-767.html (Oven Curing)

Method B
http://www.fornobravo.com/forum/f16/...tegy-3227.html (Curing strategy)
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  #14  
Old 01-20-2008, 01:54 PM
Apprentice
 
Join Date: Apr 2007
Location: UK
Posts: 100
Default Re: WFO Progressing Nicely, but Help Needed.

Great to see someone trying red brick - I'm watching keenly to see how this works out for you.

I might have misunderstood you - but your support structure is made up of 3" timber fence posts on the horizontal capped with 2" thick concrete slabs, right? I'm a bit worried that this won't be strong enough to support your oven - especially if your slabs crack with the heat. These slabs aren't really intended to do anything structural - there's no reinforcing bar in them. Best see what the real experts on here think - there's some photos uploaded here http://www.fornobravo.com/forum/phot...ndex.php?n=969

Please correct me if I'm wrong and you've got some more support in there, like a lintel, or blocks or something. Please don't think I'm criticising - just don't want to see your magnificent oven fall down! Incidently, the cheapest I could find vermiculite in the UK was 'Micafill' brand name - I think it's about a tenner a bag from builders merchants. I'm also considering using cheapo rockwool insulation from Wickes, but I'm not at that stage yet.
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Last edited by Carl; 01-20-2008 at 02:02 PM.
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  #15  
Old 01-21-2008, 12:08 AM
Frances's Avatar
Il Pizzaiolo
 
Join Date: Aug 2007
Location: Allschwil, Switzerland
Posts: 2,186
Default Re: WFO Progressing Nicely, but Help Needed.

I used rockwool for insulation. Seems to be working out ok so far...
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  #16  
Old 01-21-2008, 01:48 AM
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Journeyman
 
Join Date: Sep 2006
Location: Charlotte Bay, Australia
Posts: 259
Default Re: WFO Progressing Nicely, but Help Needed.

Jeff, you still got burnt! Darleys charged mer $120 for the same roll of blanket -- which BTW wasn't nearly enough for two layers! - and I bought another carton of Kaowool blanket with almost the same specs from Field Furnace Refractories in Sydney for about $A80, if I remember correctly (it isn't singled out in my spreadsheet, sorry)...

Cheers,

LMH
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  #17  
Old 01-21-2008, 02:07 AM
Peasant
 
Join Date: Oct 2007
Location: EVESHAM, UK.
Posts: 39
Default Re: WFO Progressing Nicely, but Help Needed.

Hi Carl,
The slabs are supported on a brick wall at the back of the platform and on the 3" timber at the front. The timbers are then on 3" lega at 450mm intervals, so I think it will be ok. famous last words?? The base of the oven,ie the bit the fire will be on is made from fire bricks from a night storage heater and this in turn is on 65mm of celotex insulation so I'm hoping that the slabs will barely get warm. I really love the construction process so if I have to rebuild at some point in the future I won't be too upset. I always think of better ways to do things just aftre i've done them so the next one will be better than the last.
I have just bought 2 100ltr bags of vermiculite from Jewsons for £8.50 a bag +vat.
It's great to find another WFO in the UK. What is your oven like? Any photo's?
Cheers Carl, good to hear from you.
Nick
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  #18  
Old 01-21-2008, 02:08 AM
Peasant
 
Join Date: Oct 2007
Location: EVESHAM, UK.
Posts: 39
Default Re: WFO Progressing Nicely, but Help Needed.

Frances,
What sort of rockwool did you use and how did you use it?
Cheers
Nick
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  #19  
Old 01-21-2008, 03:21 PM
Journeyman
 
Join Date: Nov 2007
Location: Australia
Posts: 297
Default Re: WFO Progressing Nicely, but Help Needed.

G'day Builders. Nice to read your progress/problem reports. Special thanks for replies/responses.
Nick I guess I would have used 'rockwool' also. Unfortunately our surplus ceiling insulation is a wool/poly blend. Hmmm..I think not.

Carioca, I got burnt indeed! Third degree eh.
Usually I sus prices out, but frustration with local blanks caused me to jump without looking re ceramic blanket . (Living in the sticks does have it's downsides: just hope the IR thermometer is at the P.O. when we go to town tomorrow).(It's a TN408LC, $98.Pouch,$12.Thepromkpn probe,$55, all plus gst. Postage $20. Hope the burns don't go too deep on this one!)]

Enough dribble from the Luddite,
Jeff.
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  #20  
Old 01-22-2008, 04:18 AM
Frances's Avatar
Il Pizzaiolo
 
Join Date: Aug 2007
Location: Allschwil, Switzerland
Posts: 2,186
Default Re: WFO Progressing Nicely, but Help Needed.

Hi Nick,
this is where I wrote about the stonewool.

http://www.fornobravo.com/forum/f6/i...wool-2967.html (Insulating with stonewool)

The overwhealming response I got to this post makes me think that maybe not many oven builders on this forum have used stonewool products so far...

A guy from the Flumroc company actually came round to see what I was using it for and recommended this product, which is usually used for insulation round furnace chimneys and things like that. As I said, so far its working fine. I'll be able to tell you more about its long-term properties in a couple of years time
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