First let me say hello and thanks to all that post here...been learning alot.
I am getting ready to pour the hearth for my new brick oven but am looking at different options for the insulation beneath the cooking floor.
I have been able to locate large perlite at the local hydroponics store if I go with perlite/cement insulation medium.
Or I also found at a pottery supply center "Soft Straight K-23 Firebrick" that are used for insulating Kilns. They are the same size as fire brick, 9x4.5x2.5, but weigh only two pounds.
1. What are your thoughts on which is better for beneath the brick cooking floor?
2. If perlite cement mixture is used, how thick does it need to be? Looks like 4" according to the Pompei building guide.
3. Does anyone have any experience with the K-23 bricks?
Thanks.
I am getting ready to pour the hearth for my new brick oven but am looking at different options for the insulation beneath the cooking floor.
I have been able to locate large perlite at the local hydroponics store if I go with perlite/cement insulation medium.
Or I also found at a pottery supply center "Soft Straight K-23 Firebrick" that are used for insulating Kilns. They are the same size as fire brick, 9x4.5x2.5, but weigh only two pounds.
1. What are your thoughts on which is better for beneath the brick cooking floor?
2. If perlite cement mixture is used, how thick does it need to be? Looks like 4" according to the Pompei building guide.
3. Does anyone have any experience with the K-23 bricks?
Thanks.
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