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Comparing different types of foam.
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Previously:
CNC foam cutter - GIF
Concrete foam fill - GIF
Expanding packaging foam - GIF
Installing pipe insulation foam - GIF
Insulation foam knife - GIF
Spraying foam insulation - GIF
Great Stuff (3M) FireBlock is a total scam. I've tried new and cured (3 years) and the stuff burns like it's made of gasoline. I believe many of the "Fire Block" products are like this. Fire Block prevents drafts, restricting the air being supplied to a flame. That's their justification at least.
https://www.finehomebuilding.com/for...lock-watch-out
https://statlerprojects.wordpress.com/598-2/
https://ecorenovator.org/forum/showthread.php?t=3322
https://www.youtube.com/watch?v=djB4dmfHhQk
https://www.youtube.com/watch?v=IYor83AQEG0