The government is undertaking large scale testing of cladding systems to understand better how 3 different types of Aluminium Composite Material (ACM) panels behave in combination with 2 different types of insulation in a fire.
This note sets out advice to building owners following the results of the large scale test for a wall system including:
ACM with a limited combustibility filler (category 1 in screening tests)
- PIR foam insulation
This should be read alongside the government’s explanatory note on the large scale wall systems testing.
This series of tests initially included 6 combinations of cladding systems. To further build the evidence available for experts and building owners so they can make informed safety decisions, on 8 August government commissioned a seventh large scale test – testing ACM with fire retardant polyethylene filler (category 2 in screening tests) with phenolic foam insulation.