36" San Antonio Texas Build - Introduction

[Chach]

I get it about the costs but would price it out..For most of us the budget eventually takes a back seat. LOL I paid $5.49 sq ft last year came out to less than $180. I had enough to do the floor at 2" and my insulating door 4" thick.

[UtahBeehiver]

If high tech insulation if out of your budget then look at a p or vcrete, 5 to 1 under floor and 8-10 to 1 on dome, min 4" under floor and dome. Usually need to go to a masonry supplier for perlite/vermiculite. relatively cheap. You can get portland at any big box store.

[stevef22]

Thank you very much for all the tips and suggestions. Thermal Gold 12 is expensive for my budget. Could I use a layer of sand? 1" or so? Sand has a high melting temp and doesnt transfer heat very well.

[Chach]

I used foamglas first as its water resistant. some builders drilled weep holes and used ceramic tiles to elevate the ceramic fiber board off the hearth slab to prevent water touching the fiber board if there was a breach. I used 1 1/2" of Foamglas which doesnt absorb water plus it has insulating values. 2" minimum of Thermogold 12 is the insulating board lots of us used below the firebrick. I put on 3" of ceramic blanket on the dome after it was built but I believe 2" is sufficient. Here is what I ordered for my 36" oven

27 sqft foamglas 1 1/2"
27 sqft Thermal Gold 12 - 2"
150sq ft 1" ceramblanket

[Chach]

Here is the info for the location by you. They have foamglas, thermogold 12, and ceramic fiber blanket

Distribution International
1761 Shipman Drive
San Antonio, TX 78219

Direct: 210-270-7563
Fax: 210-271-7446

[Chach]

Unfortunatley No. You would have to goto a supply house its probably cheaper that route anyway...Fornobravo sells it on the site...I used Distribution International which is a nationwide company

[stevef22]

Does Lowes/Home Depot sell ceramic fiber board?

[stevef22]

Thank you for the input Ricky

[Chach]

you would need an insulating layer such as 2" of ceramic fiber board or 4" vermicrete to put the floor bricks on...if you put them directly on the concrete you would be heating up the entire hearth and using tons of fuel to fire the oven plus it would drain the oven of its heat acting like a big heat sink.

Ricky

[stevef22]

Hi all! Just wanted to introduce myself and show a progress snap shot of build. Currently have base and top poured. Top measures 4" thick, 4 food wide X 5 foot deep.

Is it ok to put refractory brick directly on top of cement? Does a 1" layer of sand really help?


Any building tips you can give me would be great!