re: #698 MsJ

They are looking at the exterior cladding as the conduit to why it went up so quickly.

news.sky.com

Key pieces of the article:

The tower I live in is 12 storeys. Everything above the 5th floor is insulated with Rockwool, which is a pretty much a damn near fireproof material, then covered with a thin layer of plaster.

From what I’d read much earlier today, Rockwool is illegal in the UK - health concerns, apparently.