#1  
Old 09-24-2008, 10:34 PM
Serf
 
Join Date: Oct 2007
Location: Melbourne, Australia
Posts: 7
Question Pour / Casting the Oven Floor

Hi All, My very first post. Just about to start contruction of my new oven. Base is done, now running around sourcing bricks, etc and trying to decide vermiculite or FB board base etc. Fortunately for me there's a wealth of excellent information in these forums!

In my research I've come across lots of information on refactory products and I'm wondering why no one has tried to pour a oven floor rather than use fire bricks. There seems to be many castable/refactory concretes available yet I've never seen any posts asking this question or seen it done.

I figure there's probably a very good reason why.

I'd be interested if any one has thought the same and has any guidance on this?

James
Reply With Quote
  #2  
Old 09-25-2008, 03:38 AM
nissanneill's Avatar
Il Pizzaiolo
 
Join Date: Apr 2007
Location: Adelaide, South Australia
Posts: 1,867
Thumbs up Re: Pour / Casting the Oven Floor

Hi James and welcome aboard,
to answer your question, I have to make some assumptions, which is not necessarily all that wise as we all know what happens when one assumes! (makes an 'ass' out of 'u' and 'me').
Well here goes.
• Why become an explorer and play with the unknown in casting a one piece very hot surface which would need reinforcement to reduce or prevent cracking?
• Cost? To purchase a castable refractory material when we already know that bricks work fine and have done for centuries!
• Timeline! laying bricks and cutting the perimeter bricks is all over and done in a couple of hours.

I for one would not use castables for cost and the unknown. Technology is a wonderful thing, BUT I will always go with a known (and safer option) rather than an unknown.

Neill
__________________
Prevention is better than cure, - do it right the first time!

The more I learn, the more I realise how little I know


Neill’s Pompeiii #1

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Neill’s kitchen underway

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #3  
Old 09-25-2008, 05:31 AM
Frances's Avatar
Il Pizzaiolo
 
Join Date: Aug 2007
Location: Allschwil, Switzerland
Posts: 2,186
Default Re: Pour / Casting the Oven Floor

I think the main reason no one has asked that before, is that it is really easy to lay the floor, far easier and quicker (and cheaper?) than building forms for casting, then waiting for it to cure before getting to the dome.

The brick floor pattern looks nice too. But I don't see why it shouldn't work - the premade oven kits have a cast floor, don't they? But then you'd have to work out reinforcing...
__________________
"Building a Brick oven is the most fun anyone can have by themselves." (Terry Pratchett... slightly amended)


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #4  
Old 09-25-2008, 08:37 AM
james's Avatar
Brick Oven Merchant
 
Join Date: Mar 2005
Location: Pebble Beach, CA
Posts: 4,648
Default Re: Pour / Casting the Oven Floor

The castable that offers the same refractory qualities as a firebrick cooking floor is very specialized and it very difficult to work with. It's easy to get it wrong and have the casting not come out correctly.

Firebrick is a safe and reliable method -- and it works really well.
James
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #5  
Old 09-25-2008, 08:51 AM
Apprentice
 
Join Date: Jun 2008
Location: kingston washington
Posts: 184
Default Re: Pour / Casting the Oven Floor

I think cast able should work beautifully. It's not going to require much reinforcement as it sits on a flat surface. So long as there is room for expansion it should work. My guess is that you want to achieve a really flat smooth surface. I was concerned that brick would be too rough for pizza but my concerns were for not. The brick lays smooth and works beautifully for pizza. It's tried and true. If your going to try pancakes that may be a different matter altogether
berryst
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #6  
Old 09-25-2008, 09:46 AM
james's Avatar
Brick Oven Merchant
 
Join Date: Mar 2005
Location: Pebble Beach, CA
Posts: 4,648
Default Re: Pour / Casting the Oven Floor

Berryst,

I think you put your finger on it. It should work beautifully -- but the devil is in the details. :-)
James
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #7  
Old 09-25-2008, 04:24 PM
Serf
 
Join Date: Oct 2007
Location: Melbourne, Australia
Posts: 7
Default Re: Pour / Casting the Oven Floor

Thanks All, Decision made. Sticking with the tried and tested bricks! After I posted the question I read the technical details on using the castable concrete. Very fussy stuff as far as mixture and temperture goes. James' point about getting it wrong was spot on. It looks like one of those products that requires experience and lots of! Once again appreciate the feedback.
Regards
James
Reply With Quote
  #8  
Old 09-25-2008, 06:54 PM
Journeyman
 
Join Date: Jun 2008
Location: Melbourne Australia
Posts: 399
Default Re: Pour / Casting the Oven Floor

Castable is great if its fired, but needs to get to 1000c to get the ceramic bond. In a WFO it would stay very"chalky". The hardest setting castable would be the low cement varieties.
Reply With Quote
  #9  
Old 09-25-2008, 09:49 PM
james's Avatar
Brick Oven Merchant
 
Join Date: Mar 2005
Location: Pebble Beach, CA
Posts: 4,648
Default Re: Pour / Casting the Oven Floor

I don't think that is always true. There are castables that set through a chemical reaction without firing. As JamesLynn says, they are fussy about the exact mix of castable to water, setting temperature, mixing time, etc., but they are not fired.

I guess it's a modern alchemy. We're making pizza (not just gold) from base metals. :-)

James
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #10  
Old 09-25-2008, 10:05 PM
Serf
 
Join Date: Oct 2007
Location: Melbourne, Australia
Posts: 7
Default Re: Pour / Casting the Oven Floor

It's a small small world. Today I ventured out to a local refactory supplier to pick up some supplies. The person assisting me was extremely helpful and knowledgable about WFO's. During our discussions the subject turn to the topic of casting an oven floor. He mentioned he had replied to the same question that morning. It turns out I was talking to "Johnny the oven man" himself! What are the chances of running into the person who responded to your question on the same day?
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Oven Curing james Firing Your Oven 335 07-15-2014 07:12 PM
Mediocre Pie weekend/Why were my pies all “dough-y?” Fio Pizza 11 03-25-2010 06:29 AM
All things being equal Lester Newbie Forum 13 12-21-2009 01:26 AM
2-chamber oven floor material Leah Getting Started 3 09-14-2008 07:24 PM
Oven floor ikhan42 Newbie Forum 7 04-14-2008 07:55 AM


All times are GMT -7. The time now is 01:54 AM.

Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
© 2006/10 Forno Bravo, LLC