Hammond was wrong and shown to be later. It was legal for use in Britain, as the contractor reported. There was no specific outlawing of its use, just some ambiguous recommendations.
That's why the regulations are to be revisited.
.
Which rather begs the question why it wasn't banned here too if it was in the USA and Germany, doesn't it?
Who is responsible for that being the case and why?
Especially considering this
"
The Reynobond cladding applied to the Grenfell tower last year as part of a £10m refurbishment is made from powder-coated aluminium panels that are usually filled with plastic insulation, which is flammable.
As detailed on the planning application, fire barriers were due to be inserted between the cladding on each floor to limit the spread to small melt out areas. But Dr Jim Glocking, technical director at the Fire Protection Association, said its own tests on external thermal insulation cladding systems showed that if these barriers are breached by a vent or a pipe, “a chimney effect may quickly develop that will cause the very rapid consumption of the insulation and expansion of the damage area”.
Geoff Wilkinson, managing director of Wilkinson Construction Consultants, said the hole could be relatively modest in size, adding: “Even a drill hole of four inches in diameter can be enough.”
During planning in 2012, the building service engineering company Max Fordham advised that one option in the refurbishment was to remove “fire stopping” systems temporarily in order to install new heating pipes. It is unclear if that approach was taken and Max Fordham did not return request for comment.
The cladding contractor, Harley, declined to comment on how the system was built out – citing the forthcoming investigation and public inquiry.
But it is understood the design differed to that which was detailed in planning documents. Investigators are likely to want to quickly establish whether details such as cavity fire barriers, which appeared in planning drawings, were included.
Rydon, the main contractor, said in statement the project “met all required building regulations – as well as fire regulation and health and safety standards – and handover took place when the completion notice was issued by Royal Borough of Kensington and Chelsea building control”.
Rydon chief executive Robert Bond said: “I will do all I can to assist in this investigation in order to establish what caused this tragedy. In light of the public inquiry, we cannot make any further comment at this time.”
Ipswich firm Celotex confirmed it provided insulation materials for the refurbishment. The material has the most stringent “class 0” fire rating in building standards regulations but independent tests on the material used to make it, polyisocyanurate, show that in intense fires it can release lethal hydrogen cyanide fumes and can be rapidly fatal.
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