Latest News Thu, Jul 6, 2017 12:04 PM
The independent expert panel on safety has advised further testing as the next step to be conducted in helping landlords to ensure the safety of their buildings.
These large scale tests will help establish how different types of Aluminium Composite Material (ACM) panels in combination with different types of insulation behave in a fire.
The results of these tests will help landlords make decisions on any further measures that may need to be put in place to make their buildings safe following the Grenfell Tower fire. These tests will be undertaken by the BRE and will not require any new samples from buildings.
Earlier this week the panel brought together a group of technical experts from a wide range of professions and organisations. The group discussed the processes that had been followed to identify whether buildings had ACM panels and the advice provided to building owners on interim measures and agreed that these were the right first steps.
The further tests – which will look at 3 different types of ACM cladding combined with different types of insulation – will be in accordance with British Standard 8414 in line with the panel’s advice. This involves building a 9 metres tall demonstration wall with a complete cladding system – including panels and insulation – fixed to it, and then subjecting it to a fire that replicates a severe fire in a flat breaking out of a window and whether it then spread up the outside wall.
In addition, the Expert Advisory Panel recommended issuing further practical advice on immediate steps landlords can take to identify their wall materials including insulation, which will be published shortly.
The government has now commissioned the Building Research Establishment to undertake these tests as a matter of urgency. The results will be made publically available. Landlords will be expected to take their own professional advice on what is required for their buildings in the usual way.
Lord Porter, Chairman of the Local Government Association, said he was pleased the Expert Advisory Panel has acted on the LGA's concerns and is making much-needed changes to the testing process.
"This new testing needs to be undertaken urgently," he added. "“Councils worked speedily to send samples of ACM cladding for testing. These showed that only 10 per cent of the 166 councils which own their housing stock have high-rise buildings with confirmed ACM cladding.
“But we have been clear all along that entire cladding panels and the insulation behind them need to be fire tested together as a system, rather than just the core of the panels on their own.
“The fire at Grenfell Tower has been an unimaginable tragedy. This continues to be a hugely difficult time for communities but it is vital that we get this right. Councils will do whatever it takes to ensure our residents are all safe in their homes.
“The Government needs to work with the LGA, councils and fire experts to decide how we collectively take action on the result of the new testing.”
The expert panel has concluded that 6 combinations of cladding systems should be subjected to the BS8414 test procedure. The detailed design of each of the 6, will be reviewed by the panel to ensure that it is representative of the systems that are in common use including the way it is fixed.
The 6 systems will incorporate each of the 3 common types of aluminium composite material panels, with core filler materials of unmodified polyethylene, fire retardant polyethylene, and non-combustible mineral. The 2 insulation materials used in the testing will be rigid polyisocyanurate foam or non-combustible mineral wool.
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