Seems as there will be changes in the building codes, and possibly costly retrofits.
http://www.heraldscotland.com/news/...l_burn_if_exposed_to_fire_of_sufficient_heat/Design specifications seen by the Press Association suggest the renovation work carried out at Grenfell Tower included plans for a 50mm "ventilated cavity" next to 150mm of Celotex FR5000 insulation, which also has a Class 0 rating.
These panels, made by US firm Arconic, consist of Reynolux coated aluminium sheets over a Reynobond polyethylene core.
The firm's website says that the sheets have the highest A1 European fire safety rating and are "incombustible".
The interior comes in two forms, one with an A2 rating that is "non-combustible" and a second with a lesser B rating that is described on the website as "fire retardant" and "non-flammable, which prevents fires from spreading".
It is not clear which was used at Grenfell Tower.