Mine were terracotta which seems to be an excellent surface as it s very porous sucks water up like a sponge and is happy with high temps.
Unglazed quarry tile pizza.
It is the glazing process that can react to acidic substances during cooking and release toxic products but if the tile in unglazed it is just clay.
Unglazed quarry tiles hey i realise this is quite late but just thought i d reply in case you did postpone your build to the spring.
Cucinapro pizza stone for oven grill bbq rectangular pizza baking stone xl 16 x 14 pan for perfect crispy crust extra thick 5 8 4 0 out of 5 stars 53 29 95 29.
I used exactly what you are suggesting in my oven two layers of unglazed tiles with a thin layer of mortar between.
Tile glow 2 white 6 lb natural non wax compound for the polishing of most unglazed ceramic porcelain and quarry tiles which gives a long lasting finish and natural shine to tiles 111 56 111.
If you decide to use quarry tiles make sure you buy unglazed quarry tiles the shiny glazing is not applied to this type of tile which allows the tiles to draw moisture out of the pizza crust making it crispy unglazed quarry tile stones tiles steel pans accessories pizza making forum.
Unglazed quarry tiles for baking.
Did you know you can easily make a homemade pizza stone for around five dollars.