I don’t know the answer in this case, but there is a difference between burning and sustaining. When you take away you match, does the foam continue to burn? Or does the flame go out?I like to take a piece of the foam ,,,
What they call fire stop, fire caulk, whatever
And light it off and show what a great fire starter material it is!!!
I don’t know the answer in this case, but there is a difference between burning and sustaining. When you take away you match, does the foam continue to burn? Or does the flame go out?
$ ~ $
Remove the non-approved foam........Use copious amounts
of mineral wool and seal with fire rated caulking.
$ ~ $