Plastic green wall pots could cause 'Grenfell nightmare,' study warns

A recent study by the Fire Safety Engineering Group at the University of Greenwich has revealed that green walls made with plastic polypropylene pots may not meet critical fire safety standards, igniting in under four minutes. This is faster than the ACM cladding used on Grenfell Tower, which failed after six minutes and 45 seconds. Their simulations showed the green wall system failing in three minutes and 45 seconds, while the pots by themselves would fail in just two minutes. Professor Ed Galea, who led the study, pointed out that over 94% of the heat generated comes from these polypropylene modules, challenging claims that wet plants improve safety. The research calls for a ban on flammable potting systems and the creation of new testing protocols for green walls.