I wonder if/how you can compare something like Cordierite to a regular fire brick.
I am interested because I know Baker's Pride uses 1.5" Cordierite and Marsal and Sons oven company uses what they say is 2" refractory brick - no details, but for example a standard firebrick is more like 2.33" thick.
I would like to try to understand if its possible the thinner one could be just as equipped to handle a busy period of pizza after pizza being placed on the same part of stone.
For what it's worth, Baker's Pride offers a 2" "fire brick deck" as an upgrade.