Hello and welcome to the Grenfell Tower Inquiry podcast with me Kate Lambeau.

This week, the inquiry heard from another insulation manufacturer, Kingspan.

Only last month, Kingspan withdrew three large-scale fire tests results for K-15,

one of the products used on Grenfell Tower,

after admitting that the tests did not accurately reflect the product being sold.

In evidence this week, former staff admitted they knew Kingspan was using a new chemical formulation,

which performed differently to that which had been tested.

In 2015, one of those employees told the company it had stretched the truth

by claiming its product was suitable for use on buildings over 18 metres in height.

Let's get started with the evidence then.

The first witness this week, Iva Meredith joined Kingspan as a technical advisor in 1999, aged just 22. After 10 years

there, he ended up as a technical project leader and eventually was responsible for all

the large-scale fire testing on the company's insulation products. When Iver Meredith joined Kingspan,

the company had no insulation suitable for use on high-rise buildings.

But in January 2004, he wrote to his bosses that that was about to change.

Counsel to the inquiry Kate Grange read from his emails.

Looking at the potential for a Class B phenolic product that will achieve

accessibility for above 18 metres in façade construction by building regulations.

Kingspan, like its competitor, Celetex, made a form of plastic foam insulation, which is combustible.

That meant its products couldn't be of limited combustibility.

The standards suggested for insulation used on buildings over 18 metres in height

by building regulation guidance in England and Wales. But there was another option available

...