Antoine, in Robyn's installation, it looks like she has a bottom ceramic insulation, then a concrete looking layer, then the floor of the oven. For mine it looks like I am to use two layers of the ceramic insulation and then the oven floor, is that correct?
It takes 2 people to move the floor pieces and more like 3 for the dome pieces. Just spend all day doing just that.
Yes, you are correct for the floor installation.
Robin actually had something called vermiculite insulation which is standard with the older model of FGM ovens imported to the US.
Since I took over the import I told FGM to keep their vermiculite floor insulation. I personally add ceramic fiber board when the ovens arrive to my warehouse. It is a little more expensive but a lot more efficient and easier to work with. Quality, only quality.
Yours is the same as Robyn's installation in the fashion that you will put the insulation, 2" total of ceramic fiber boards, 2 layers of the 1" thick boards. Over the insulation you will put the concrete floor and then the refractory brick tiles over it.
I have seen the center concrete piece of the concrete floor a little lower than the the front and back piece before. So when you will put the brick tiles you may need to put a little of the refractory clay between the tiles and the concrete to slightly raise them.
Call me if you have any question during the instal.