I'm going to have to examine this a bit more thoroughly. If you parse the words; it says "most" spray-applied asbestos products were banned for fireproofing, and insulating purposes.

So if that was a ban on specific, and or popular asbestos containing products. What's to stop a company from creating a new asbestos product in order to bypass the ban entirely?

Something is up, it makes no sense at all that they would need to spend 30m to demo this school. First thing that popped in my mind when you posed the question was asbestos. But I don't have any other competing ideas.

I wonder if the school's insurance policy covers school shootings. Seems doubtful, but who knows nowadays.