Hi All,
I finally got my Casa 90 yesterday, and before I fully commit to my floor construction, I just want to verify my thinking.
My plan is to put a layer of FB board down on my slab, next put a layer of low duty fire brick (so we're at 4.5" high now off the slab...2" of FB board plus 2.5" of firebrick), construct the forno bravo cooking floor on top of the fire bricks, and then position the two halves of the oven around the cooking floor. The bottom edges of the oven will be in contact with the fire bricks, of course.
I've noticed that a lot of people using FB board or SuperIsol will just put the forno bravo cooking floor on top of the insulation, without the layer of firebrick. My thinking is that the firebrick will give me a little more mass and will hold/reradiate heat longer. My only concern is the possibility of heat "leaking" out the sides of the firebricks, since they are insulated only on the bottom (by the FB board). Or is that a non-issue?
I should mention that all of this will be enclosed in a gable house.
Am I on the right track, or are the fire bricks overkill?
Thanks!
I finally got my Casa 90 yesterday, and before I fully commit to my floor construction, I just want to verify my thinking.
My plan is to put a layer of FB board down on my slab, next put a layer of low duty fire brick (so we're at 4.5" high now off the slab...2" of FB board plus 2.5" of firebrick), construct the forno bravo cooking floor on top of the fire bricks, and then position the two halves of the oven around the cooking floor. The bottom edges of the oven will be in contact with the fire bricks, of course.
I've noticed that a lot of people using FB board or SuperIsol will just put the forno bravo cooking floor on top of the insulation, without the layer of firebrick. My thinking is that the firebrick will give me a little more mass and will hold/reradiate heat longer. My only concern is the possibility of heat "leaking" out the sides of the firebricks, since they are insulated only on the bottom (by the FB board). Or is that a non-issue?
I should mention that all of this will be enclosed in a gable house.
Am I on the right track, or are the fire bricks overkill?
Thanks!
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