Open cell spray foam, is it flammable? let's find out! 

Thanks for another great video. You obviously have a lot of experience and knowledge. I'd love to see more shop / mechanics tips videos.

Thanks for this one too. Been dabbling with PU foam too. Glad its not really flammable. Or at least way less than some other building materials

Put more heat on it that's basically the same as hitting a piece of wood with that torch how little you put it on and same with the sparks. It isn't flammable as it puts a lighter on it, and it catches but if your shop or house catches fire good luck putting it out and you better get out before any of the fume get to you.