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Pizza Oven Floor Design

You have a number of design options when it comes to your oven’s underfloor insulation and the type of cooking floor you will be using and how you lay it out. Insulation is very important for your oven’s performance, so that isn’t the place to economize.

We recommend using at least 2″ of CalSil board directly underneath your cooking floor. If you use high quality CalSil board you should be able to place the oven floor or Biscotto stones directly on the insulating layer and have a level cooking surface without having to use a thin layer of sand or fireclay (or a mixture). If your insulting board isn’t smooth, or if you are putting your oven floor on a layer of insulating concrete, you will have to use sand/fireclay to level the floor.

Your cooking floor will be made out of firebricks of Biscotto Stones, but you still have quite a few options to choose from. A residential pizza oven will typically have a 2″ or 2.5″ thick floor, depending on whether you use larger format floor tiles, or standard fire bricks. For a bread oven, you will set the bricks on the narrow side, giving you a 4.5″ thick floor.

If possible, we recommend you use either larger format firebrick tiles (12×12″ are good), or large pie-shaped Biscotto stones.