Fire Rated Expanding Foam on Fire

What happens to fire rated expanding foam when exposed to a flame? This piece of foam was installed many years ago, the exact brand/type is not known. ► Support this channel: Patreon:   / jwflame   PayPal Donations: https://xo4.uk/?PPP ► Social Media: Twitter:   / jwflame   Facebook:   / jwflame   Instagram:   / jwflame   ► Contact info, sending stuff in: etc.: https://xo4.uk/?YTT ► Website - More on this video and many other subjects Website: https://flameport.com