Kingspan employee responsible for testing was a 鈥榝unctioning drug addict鈥

Kingspan had threatened the National House 好色先生TV Council (NHBC) with legal action on the grounds of defamation after the organisation discovered that its K15 insulation product was not compliant with building regulations, the Grenfell Inquiry has been told.

The NHBC, the country鈥檚 largest building control body, had warned Kingspan that it would have to start informing projects that had used K15 that it was not compliant. Kingspan responded by instructing lawyers to send a letter in February 2015 to the NHBC saying it would seek a legal injunction under the Defamation Act 2013.

The letter read: 鈥淚t is our client鈥檚 position that neither [the] NHBC or the market as a whole will suffer any detriment as a result of our client being given a further sensible period in which to demonstrate compliance.鈥

It gave the NHBC three days to confirm that no steps would be taken which would damage Kingspan鈥檚 reputation. The letter stated if the deadline was missed Kingspan would be 鈥渓eft with no alternative but to protect its position by applying to the court for an injunction preventing the NHBC from making the statements you propose in relation to the K15 boards鈥.

Kingspan Ivor Meredith 2

Ivor Meredith giving evidence at Tuesday鈥檚 hearing

Asked by inquiry barrister Kate Grange QC if Kingspan鈥檚 lawyers were right to say in the letter there was 鈥渘o justification鈥 for the NHBC鈥檚 warning of potential non-compliance, Ivor Meredith, a former technical project manager at the firm who spent more than 16 years at the company, replied: 鈥淭his is a very heavy-handed approach, isn鈥檛 it? I wouldn鈥檛 say that their position was unjustifiable.鈥

In 2016, the NHBC published guidance confirming that K15 could in fact be used on buildings above 18m.

The insulation also received certification for use on high rise buildings by the Local Authority 好色先生TV Control, which wrongly said that K15 held the status of limited combustibility needed for use above 18m.

Meredith agreed with Grange鈥檚 suggestion that the stamp of approval was 鈥渙f enormous benefit to Kingspan commercially鈥, with the inquiry shown an email from technical manager Philip Heath in which he exclaims: 鈥淕REAT NEWS!鈥

The inquiry also heard how Meredith, who was responsible for proving the firm鈥檚 products were safe to use on tall buildings, had a serious drug problem.

It emerged he had been 鈥渦nder enormous pressure鈥 to justify the use of K15 on buildings taller than 18m after the NHBC and Wintech, a facade engineering firm, had questioned Kingspan鈥檚 information on K15.

Meredith, who started working for Kingspan in 1999, was fired for gross misconduct in 2015 for falling asleep at his desk and driving a company car against management鈥檚 instruction.

From November 2005 to January 2015 Meredith held the role of technical project leader and was responsible for testing and certification for Kingspan鈥檚 Kooltherm K15 insulation, which was installed on the 67m tall Grenfell Tower despite not being safe for use on buildings above 18m.

The inquiry has already heard how Kingspan had been selling K15 for over 14 years for use on high rise buildings on the basis of a 2005 test of an earlier version of the product dubbed 鈥榦ld technology鈥 K15.

In 2006, the firm had changed the product to a newer version called 鈥榥ew technology鈥 K15 which had turned a December 2007 testing rig into a 鈥渞aging inferno鈥 that had to be extinguished out of fears it would endanger the testing laboratory.

Kingspan only withdrew the test report for the newer product last month after sending a letter to the 好色先生TV Research Establishment claiming the firm was 鈥渘ow of the view鈥 that the product being sold was different to what had been tested.

But Meredith told the inquiry on Monday that it had been 鈥渃ommon knowledge鈥 at the firm from 2006 onwards that the test report used to market the newer K15 as safe was from the older K15.

Meredith, who described himself as a 鈥渇unctioning addict鈥, said his drug problems had escalated in his last couple of years at the firm resulting in his firing for gross misconduct in August 2015

The hearing was shown minutes from an appeal hearing brought by Meredith after he was fired in which Meredith said he had been 鈥減ut under excessive stress鈥 and was 鈥減hysically in a mess鈥.

The second module of the inquiry is focusing on the role of the refurbishment鈥檚 materials in the 2017 fire at Grenfell tower, which killed 72 people.

The inquiry continues.