1. Kingspan, who made insulation used on Grenfell Tower was "stretching the truth" claiming its cladding product was appropriate for use on high-rise buildings.
They fire-tested it in 2005, but changed the insulation's formulation in 2006.
2. Ex-technical director Ivor Meredith told the inquiry into the fire this was "common knowledge" at Kingspan.
He described a fire test using the new version of Kingspan's K15 in 2007 as a "raging inferno", with the insulation "burning on its own steam".
3. He told the Grenfell inquiry he was shocked by what he saw.
Despite this catastrophic fire test failure, Kingspan continued to use the results from the original 2005 test to sell its material as appropriate for use on high-rise buildings.
4. Kingspan K15 insulation was then used in the flammable cladding system mounted on to Grenfell Tower, alongside Celotex RS5000.