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victorsee 06-27-2011 12:15 PM

New member.. Vermiculite insulation and other questions
 
Hello out there
I have read this forum with interest, and have started work on my oven in Vineyard Haven, mass. At this point I have footing, base, hearth all complete. No pictures to post.. but so far .. it looks like most other pictures i've seen. (I think thats good news).
Here are a couple of questions:
1. I'm ready to pour the insulating layer on the hearth. What are advantages and disadvantages if any ( beyond amount) of pouring 3-4 " insulating layer over whole hearth versus in a circle that mirrors the diameter of the oven?
2. I would like to include a wired built in thermometer. Where do I put the thermo coupler wire? under the floor brick? in oven wall?
3. I've read with interest about 'the indispensable tool' . Are there folks willing to lend such an item?

I have a kazzilion more questions.. but they will come as i build upward..
thank you in advance.. I'm glad to be a part of this band of bakers!

azpizzanut 06-27-2011 11:00 PM

Re: New member.. Vermiculite insulation and other questions
 
Hi Victor,

No need to waste cement and vermiculite where you don't need it.

Look at my oven #2 for an idea on how to make an indispensable tool. View as a "slide show" to make it easier. Just a hinge, length of wood and a bolt to fasten it to a piece of plywood in the center of the hearth. You can put a lip on it to center the brick if you wish.

Place a pvc pipe under the vermicrete insulation for your thermocouple wire. Remove the pvc after the insulation cures. Determine the location of the probe so you can facilitate its placement when you do the hearth.

Best of luck,

Neil2 06-28-2011 10:31 AM

Re: New member.. Vermiculite insulation and other questions
 
"disadvantages if any ( beyond amount) of pouring 3-4 " insulating layer over whole hearth"

Besides being necessary for a functional point of view, the insulating layer is very porous. Depending upon your final dome cladding or enclosure, this layer can be a pathway for water entering your oven.

kendunn 07-09-2011 09:05 AM

Re: New member.. Vermiculite insulation and other questions
 
Quote:

Originally Posted by victorsee (Post 115914)
Hello out there
I have read this forum with interest, and have started work on my oven in Vineyard Haven, mass. At this point I have footing, base, hearth all complete. No pictures to post.. but so far .. it looks like most other pictures i've seen. (I think thats good news).
Here are a couple of questions:
1. I'm ready to pour the insulating layer on the hearth. What are advantages and disadvantages if any ( beyond amount) of pouring 3-4 " insulating layer over whole hearth versus in a circle that mirrors the diameter of the oven?

I am new here myself and will freely admit there are others that know a lot more than me, but if I understand right what you are asking I would say the biggest negative to pouring it would be its just not nearly as strong or durable as concrete or mortar and it doesn't need to support much weight as it kinda floats there. Just my observation from just completing my first oven.


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