Adding CalSil Insulation Boards - Wood-Fired Oven Hearth - Under Cooking Floor - July 2024
![Image](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhSd52JCQYnIbeR_eZ5i28DbAM_KqxPGtbMPywDRsCcIaf1Jr9lXdkVANngxzGP3WFUcLiaibmgrgLaGzFmNTSEBR2bWrqiigLIIj697uCz6VqtXvyQfbn-vHiIbUgX0bD_tjwq1aP6mxA48ON7BSHaelxCpzyVJGF6080xKRVcoAlcOtudw9kZRKlB6Q/w640-h482/PXL_20240720_170327637.MP.jpg)
A couple days ago, I posted details of how I am using sheets of tile (flipped upside down) to create a little drainage pattern that sits on top of the poured concrete hearth of our wood-fired pizza oven . On top of that tile goes - first - insulation. Then, the floor and dome. There are a number of ways to do insulation, but over the past few years, the FornoBravo community has seemed to coalesce around the use of Calcium Silicate Insulation Boards as the *best* insulation. I found some online - sold locally in Southeast Wisconsin - at a decent price. I bought 54 square feet of 2" thick boards. I've opted to go with a double layer - 4" of CalSil boards. That's the recommendation for the 'best insulation' you can use. Why insulation? To keep the heat *in* the oven. In this case, it is about creating a barrier between the cooking floor and the concrete hearth. From what I understand...if NOT for the insulation, the concrete hearth would act as a '