So I just looked through a couple dozen pages of Google results regarding ITC coatings, and here's what I have found:   - Most of the data collected concerns using ITC in gas kilns, specifically in salt, soda and wood kilns, to protect the bricks from the corrosive vapors. It works great for this. Can you make your own coating that will also work great, and for a lot less money? Yes.   - ITC increases the efficiency of the kiln by creating a surface that reflects more heat back into the kiln