They used Reynobond PE instead of the Reynobond FP that the architect had specified, saving £2 a square meter. This was apparently legal in the UK, although it would not be allowed n Germany or the US.
FP stands for “Fire Proof”.
and apparently PE stands for "Pyrotechnic Enhancing"...
Related - info
The aluminum clad PE PLASTIC resin foam core panels are flammable, unlike the FR (fire-resistant) mineral core panels.
Damn tragic.
Wonder how many other buildings are clad in the flammable panels?
Cheap plastic cladding on Grenfell Tower is believed to have carried the flames so quickly.
Planning documents suggest fire-resistant cladding was initially chosen, but later ditched to save just £6,250.
Yesterday, MailOnline revealed that the bosses of the company that installed Grenfell Tower’s allegedly deadly cladding were accused by HMRC of pumping £2.5million into tax avoidance schemes.
http://www.dailymail.co.uk/news/article-4613094/DOGS-help-grim-hunt-bodies-Grenfell-Tower.html