- Joined Feb 4, 2017
Read the forum but never post. Working on another stick burner. Previously I’ve used rock wool to insulate the fire box. Worked fine but I was wondering if anyone has ever thought to pull a vacuum instead of filling with insulation? I’m a Pipefitter/welder so sealing it is not an issue and I also have access to equipment to pull a vacuum. Just wondering if anyone has tried this.