The cladding was not fireproof but just fire resistant and the mistake was that the building regulations did not spot the difference quickly enough.  The survivors are looking for someone to blame but this is not appropriate as it was a mistake by the authorities not the design engineers..

BUT more importantly what do we do about the other buildings that are at risk; to avoid another disaster?

Well, the fire fighters problem was that they could not get up above the fire and douse it or rescue the residence in the upper floors.

SO priority must be to remove the cladding on the tall tower blocks first and at the same time arrange for roof access for all residents in the case of fires.  Once the roof is a secure place then crane helicopters can be used to evacuate any residents that are unable to escape downwards due to the fire. 

In my book, the loss of life at Grenfell would have been minimal if the roof had been equipped with a secure area, i.e a fireproof [asbestos cement clad] container on its roof.