I just posted about the lizard skin stuff in another post. You can buy the ceramic beads and mix it yourself. If you paint to the edge it will burn back a little. Leave 3/4" and you would be fine. Or paint, burn, sand and repaint what gets charred. I used some of the peel N stick, then insulation. I used a foiled micro bubble insulation. I find the foil works great. Take a piece of tin foil and hold it 3" inches from you face, you can feel the heat reflect back.
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