A former employee of the company admitted to using combustible insulation on Glenfel Tower in west London.

Celotex's Jonathan Roper (Jonathan Roper) said in a public investigation that his work to get the insulation material approved for use in high-rise buildings was "dishonest."

He added that he felt "very uncomfortable" with what he was asked to do at the time.

Celotex stated that employees have left the company under disciplinary procedures.

The first phase of Grenfell's investigation concluded that the cladding that was laid during the renovation contributed to the June 2017 fire, resulting in 72 deaths.

It is now studying how the tower fire originally occurred.

On Monday, Celotex’s former product manager, Mr. Roper, said in an investigation that the company’s way of presenting its fire test results was misleading.

He said Celotex should consider not selling products for high-rise buildings.

In 2013, when asked to study how to approve Celotex insulation materials for buildings over 18m, Mr. Roper wrote to colleagues asking whether they should think that these materials “in fact should not be used behind most cladding panels, because Once there is a fire, it will burn."

He told the investigation that the response he received from his colleagues clearly shows that Celotex is determined to bring this insulation material called Rs5000 to the market, no matter how it passes the fire test.

Mr. Roper accepted the discussion within the company whether Celotex complies with the building regulations or violates the regulations in order to make more money.

The investigation learned that after the first test failed in January 2014, the second system passed in May 2014, but Celotex failed to disclose other incombustible elements added to prevent the system from failing.

On Monday, the investigation learned that Celotex added a 6mm refractory magnesium oxide board to the cladding test bench composed of 12mm fiber cement board for the second test.

The investigation heard that an 8mm fiber cement board was added to the magnesium oxide to "hide" its presence, making the entire system almost flush-but there is a 2mm difference.

Mr. Roper agreed with the lead lawyer Richard Millett QC of the investigation that the decision to use "a thinner layer is to make it less obvious, there are other things behind it", which will help "stop anyone from asking questions." Any possibility". cosmetic.

The lead attorney for the investigation Richard Millett QC asked: "Did you not think it was dishonest at the time?"

Mr. Roper said: "Yes, it is true. I have taken a lot of actions at Celotex. In retrospect, these actions were totally unethical. I may not have considered the potential impact of these actions at the time.

"I was 22 or 23 years old and I had my first job. I think this is standard practice, although it does make me uncomfortable."

Mr. Roper said that his superiors ordered the removal of any reference to magnesium oxide in the marketing literature. He agrees that this is "misleading and misleading with intent."

Mr. Millett asked: "Did you realize that if you describe the test to the market in this way, it would be a fraud in the market?"

Mr. Roper said: "Yes, I did it.

"I feel very uncomfortable with this. I feel very uncomfortable with what I was asked to do."

Mr. Roper said that no one in the company could express his concerns.

In the opening statement of the second phase of the investigation, Celotex stated: “After the Grenfell Tower fire, during the investigation conducted by Celotex, certain issues related to the testing, certification and marketing of Celotex products appeared... these The problem involves unacceptable behavior by some employees."

The investigation had previously heard that Celotex regarded Grenfell as the "flagship" of its products and cynically took advantage of the "smoke of chaos" surrounding building codes at the time.

Celotex, which belongs to the French multinational Saint-Gobain Group, has always insisted on using 5,000 rupees for buildings over 18m, only on the "rainscreen cladding system with specific components" used when it passes the fire safety test.

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