Homeowners yesterday condemned plans to fix their homes with Grenfell Tower's combustible insulation.
They were shocked to find boxes of Kingspan Kooltherm K15 in their parking lot as work started to protect their property.
The material is at the heart of the investigation into the Grenfell fire that killed 72 people in June 2017.
It had failed a number of fire protection tests and turned a test bench into a “raging inferno”.
41-year-old Pam O & # 39; Donoghue, a clinical cancer nurse specialist, stands with the disguise that was left behind in the underground car park
The Hill Group, the company behind the development of Zenith Close in Barnet, North London, has ordered the crates in case the current insulation material, also Kingspan K15, has been damaged during repairs to broken fire breaks.
It follows building codes, but experts said there was "no excuse" for upgrading the material for safety reasons. They warned of another fatal fire if the approach was taken elsewhere.
Hundreds of thousands of tenants in unsafe homes face average bills of £ 40,000 – and some as much as £ 115,000 – to fix fire safety deficiencies identified after Grenfell.
Only 202 of an estimated 11,760 dangerous buildings have so far been repaired because ministers have been slow to release funds.
The Daily Mail is committed to ensuring that the work is completed within 18 months and that the tenants are spared the bill.
This newspaper also demands that companies responsible for security failures pay their fair share.
Our campaign is supported by MPs from all parties, including more than a dozen Tory backbenchers.
Pam O & # 39; Donoghue, a nurse who lives in Zenith Close, says she discovered the boxes of Kingspan K15 insulation on Saturday.
She and 71 other tenants were unable to sell or rebook their homes as their block was found to pose a fire risk in June last year. Hill agreed to cover the cost of fixing broken fire breaks and work began last week.
41-year-old O & # 39; Donoghue, a specialist in clinical cancer nurses, stands outside her block of flats in Barnet, north London, where developers are installing Kingspan K15 siding, made from the same material as Grenfell's siding
However, local residents are angry that the company is planning to retrofit Kingspan K15 and fear they will have to pay to replace it if tests later prove it is unsafe.
This depends on how it is combined with other materials in the building. However, insulation has already been banned for new buildings over 60 feet in height. Zenith Close is over 60 feet, but there is no total ban on combustible insulation when these buildings are made safe – as in this case.
Miss O & # 39; Donoghue, 41, said Hill was taking "one hell of a risk." She added, “We live in these buildings and we don't know how much they are a death trap. It's a lingering nightmare. & # 39;
The Grenfell investigation revealed that the Kooltherm K15 was installed on the West London Tower, although it was not suitable for high-rise buildings.
The disguise expert Dr. Jonathan Evans told the mail that Hill had made "a terrible decision" to upgrade the material "because of the cost of replacement."
Independent fire safety expert Stephen Mackenzie said the regulations were "an absolute bog," adding, "Someone can and will die as a result."
The material is at the heart of the investigation into the Grenfell fire that killed 72 people in June 2017
Local Tory MP Dr. Matthew Offord, who supports the Mail campaign, said, “Developers don't seem to have learned anything from Grenfell in pushing the Kingspan K15 installation. I have written to the Hill Group expressing my deep concern. This causes unnecessary stress. & # 39;
A Hill spokesman said the K15 insulation had been approved by regulators and would only be used to repair collateral damage.
He said the company is confident the building will pass further fire tests.
Kingspan has apologized for "process flaws between 2005 and 2015".
The K15 boxes were removed yesterday at the request of the London Fire Brigade.
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