Dangerous Grenfell-style cladding set alight in 130 seconds and the blaze reached 813C within minutes, damning Government tests have revealed.
82 tower blocks have been judged unsafe after failing new fire safety checks after at least 80 people died as the inferno swept through the 24-floor tower block in June.
The stiffer tests they failed involve starting a fire using wooden pallets under mock-ups of the sides of each building including its metal cladding and insulation.
Results show that to pass the tests they needed to fully resist fire for 40 minutes - but the panels found on Grenfell and other blocks lasted just under nine minutes.
Photographs of the cladding before and after the tests show the horrifying damage caused by a small fire and shows why Grenfell Tower was seen sparking 'like a match' before it was engulfed.
This is the Grenfell-style cladding before and after it failed Government tests, which revealed that it ignited in just a quarter of the time it was meant to
Graphs measuring the temperature of the fire during tests show how within around six-and-a-half minutes it had reached 800C before the blaze was extinguished
Graphs measuring the temperature of the fire during tests show how within around six-and-a-half minutes it had reached 800C before the blaze was extinguished.
The combination of cheap combustible cladding and insulation has been blamed for the deadly spread, and acceleration, of the blaze.
The 82 buildings failed the new tests which checked the fire safety of the materials in conjunction with each other.
New ‘whole system’ tests were introduced after hundreds of cladding samples failed flammability tests in recent months.
The checked simulated tall buildings with insulation and cladding to see how they reacted to different