Author Topic: stacked brick oven in the making  (Read 8008 times)

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Offline Jet_deck

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Re: stacked brick oven in the making
« Reply #25 on: February 03, 2013, 12:55:18 AM »
Good job.  I say the ground is sucking the heat out of the floor.  Do you have any isulation that you can put down first and restack the whole thing?  Anything would improve your results. 

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Offline Tscarborough

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Re: stacked brick oven in the making
« Reply #26 on: February 03, 2013, 12:55:55 PM »
Clay brick are fired to far higher temps than you are able to reach.  They will eventually spall and deteriorate, but not any year soon.  Solid soft brick are best, do not use brick with holes in them and you are fine.  Concrete brick on the other hand will explosively decompose on being fired.

Offline dylandylan

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Re: stacked brick oven in the making
« Reply #27 on: February 04, 2013, 12:01:33 AM »
@Tscarborough - thanks for the info, that's reassuring.   I've been reading up on the various types of brick.   I've just picked up a ceiling's worth of fire brick, exactly the same spec as the floor.  The next bake will use them.

Out of interest, why are the bricks with holes bad?   The ceiling that I used for this bake were bricks with bout 8 holes in each brick - presumably to make them able to be reinforced.

Offline Tscarborough

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Re: stacked brick oven in the making
« Reply #28 on: February 04, 2013, 07:59:36 AM »
The holes are to save material and to allow for more even firing.  They mean they are modern extruded brick as opposed to old pressed brick.  The face is more likely to delaminate that is all.

Offline dylandylan

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Re: stacked brick oven in the making
« Reply #29 on: February 04, 2013, 01:39:29 PM »
Ok interesting.  I'll relegate those holey bricks to the outer layers and remove them entirely once I have enough fire brick.  I've been looking around at insulation possibilities and may also clad the entire thing in an aluminium shell with a vent/flue.   This is a very slippery slope I'm on.

Offline PizzaJerk

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Re: stacked brick oven in the making
« Reply #30 on: February 20, 2013, 04:12:07 PM »
Regular brick (non firebrick) + high heat = potential explosion = potential danger
I read that solid clay brick is a suitable substitute for firebrick. Do you think that it would hold up to the rigors of the heat generated in the oven?

http://www.ehow.com/info_8635055_fire-brick-substitutes.html (don't know how true this info is)

These seem to fit the description of solid clay (I'm also just going by what the description tells me of course) please correct me if I'm wrong.
http://www.lowes.com/ProductDisplay?partNumber=34454-22076-110100400&langId=-1&storeId=10151&productId=3613902&catalogId=10051&cmRelshp=rel&rel=nofollow&cId=PDIO1

I am also flirting with the idea of constructing a small oven, interested to see how this turns out.
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Offline Tscarborough

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Re: stacked brick oven in the making
« Reply #31 on: February 20, 2013, 04:56:45 PM »
That is an extruded wire cut brick.  It would be my last choice, if I would even use it at all.  You want a dry pressed molded brick, like the one below, or an old common solid.

Offline PizzaJerk

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Re: stacked brick oven in the making
« Reply #32 on: February 20, 2013, 05:03:52 PM »
That is an extruded wire cut brick.  It would be my last choice, if I would even use it at all.  You want a dry pressed molded brick, like the one below, or an old common solid.

Excellent. Now that I see both photos in comparison, you can really see how inferior the brick from Lowes is. At least for the purposes of making an oven.
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