Ex-employee at firm that produced flammable insulation on Grenfell Tower says she wrote 'WTF' on fire test report when she first saw it
A former employee at the firm responsible for the flammable insulation used on Grenfell Tower was so alarmed by the manipulation of a fire test she was left writing 'WTF', an inquiry has heard. Debbie Berger, former product manager at Celotex, scribbled the acronym as an 'expression of shock' when she realised additional materials had been added to the company's Rs5000 product to get it to pass a safety test. Ms Berger made the scribbles on a report document when she became a product manager for Rs5000 in 2014, just months after the test was passed. It comes after the inquiry heard how Celotex, part of the French multinational Saint-Gobain group, 'overengineered' a test of Rs5000 in May 2014 to get a pass after a first test failure in January 2014. Celotex added a 6mm fire-resisting magnesium oxide board to a cladding test rig and 8mm fibre cement panels were added over the magnesium oxide to 'conceal' its presence. Debbie Berger, former product