I was baking in the oven some rolls at 370 Degrees. So I decided to test a piece of Frost King. I turned the oven off after placing a strip on a metal cooking pan. Left it in there for 30 minutes. No smell. Easily removed as if it was 60 degrees. No gue. nothing. The shiny aluminized side had stayed about normal to the touch. The underside was normal . Took it outside for a smell test. It was fine. In appearance and everything. I dont believe this was the product used in the post where a friend had a poor expirience in a heated condition. For this puts end to this. Still will check but i dont anticipate a problem.