Insulation industry news from Global Insulation

UK: An investigation by the BBC’s Panorama news program has alleged that a safety test for Celotex’s RS5000’s polyisocyanurate foam (PIR) insulation board product used extra fire retardant in safety tests. The programme believes that a different product was eventually sold to the public. It also accused the subsidiary of Saint-Gobain of mis-selling the insulation with misleading marketing.

Celotex said that it was unaware of this allegation and had not identified anything that would support it. It is investigating this allegation as a ‘matter of urgency.’ It added that it had not used any special formulation for a recent successful BS-8414 system test in May 2018 or Class 0 fire testing.

Celotex suspended supply of RS5000 PIR insulation board in June 2017 following its use as part of the rainscreen cladding system in the refurbishment of Grenfell Tower. The building had a fire in June 2017 that killed 72 people.

UK: A review by the government into building regulations and fire safety has found that the local buildings regulation system is broken, However, it has not recommended a ban on combustible cladding, according to Reuters. The independent review followed a fire at a residential tower block in June 2017 that killed 71 people. An aluminium cladding with a flammable plastic core is thought to have contributed to the rapid spread of the fire.

Judith Hackitt, the engineer and former Chair of the UK Health and Safety Executive presiding over the review, defended existing regulations and blamed poor implementation of the rules by builders and contractors. She has recommended that the building regulations system be changed to focus on high-rise residential buildings first and then to improve building safety during design, constriction and refurbishment. She also called for greater enforcement powers with ‘serious’ penalties for individuals who infringe the rules.

Organisations including Kingspan Insulation, Knauf Insulation, the Mineral Wool Insulation Manufacturers Association and the Constructions Products Association provided written evidence to the review.

A separate public inquiry is examining the causes of the Grenfell Tower fire and a police investigation is also looking at the incident.

UK: Celotex says that a rainscreen cladding system using its RS5000 polyisocyanurate foam (PIR) insulation board product has passed the BS 8414:2 safety test. The insulation producer previously announced in January 2018 that it had found errors between a previous test and the description of the system in the report of the test. It added that the rainscreen cladding system conformed to the BR 135 fire test. It is now notifying the relevant bodies and is contacting its customers about results of this latest test.

Celotex suspended supply of RS5000 PIR insulation board in June 2017 following its use as part of the rainscreen cladding system in the refurbishment of Grenfell Tower. The building had a fire in June 2017 that killed 71 people. The suspension remains in place.

UK: A leaked report by the by fire investigation specialists BRE Global has blamed a poor cladding refurbishment on a lethal fire at the Grenfell Tower in London on 14 June 2017. The document, leaked to the Evening Standard newspaper, found multiple deficiencies in the installation of the windows, cavity barriers and cladding system, and their failure to meet building regulations.

The report described insulation used in the refurbishment as ‘combustible’ and said that it provided a medium for the fire to, ‘spread up, across and within sections of the façade.’ BRE noted that the 75mm insulation foam used on most of the spandrel beams had, ‘no markings to identify the manufacturer of the foam.’ The Evening Standard says that 100mm Celotex foam insulation was also used in the columns but that the BRE report does not further distinguish between the two types.

71 people were killed in the fire that took place on 14 June 2017. The draft BRE report was submitted to the Metropolitan Police Service as part of its investigation.

UK: Celotex has found errors in a safety test for its RS5000 polyisocyanurate foam (PIR) insulation board product that was used as part of the rainscreen cladding system in the refurbishment of Grenfell Tower. As part of a review of the product the company has determined that there were differences between the system as tested for BS 8414:2 and the description of that system in the report of the test. The BS 8414:2 safety test was originally conducted prior to the RS5000 product being launched.

The insulation producer is exploring whether any safety issues arise from the differences in the test. It says it has notified the relevant bodies and is contacting its customers.

“It is a matter of real regret for us that this issue has arisen: we fully recognise its potential seriousness and that it will give rise to concern. We are working hard to arrange the further testing as quickly as possible and we will make a further announcement once the results of that testing are available,” said Celotex in a statement.

Celotex suspended supply of RS5000 PIR insulation board in June 2017 following a fire at Grenfell Tower in London that killed 71 people.

UK: Gene Murtagh, the chief executive officer (CEO) of Kingspan Group, has called for a number of changes to be made to fire safety regulations for buildings in the UK. He called for large-scale testing under BS8414 to be extended to cover all cladding systems, a strengthening of the way desktop studies are used in fire safety compliance, improved training for installers of building facades and better control of fire safety through the design and construction process of buildings. His comments were made to Building Magazine following the Grenfell Tower fire in June 2017 and at the start of the Public Inquiry into the incident.

“So far as I am aware, polyethylene (PE) cored Aluminium Composite Materials (ACM) have never been successfully tested in a cladding system in a manner consistent with building regulations so it is hard to understand how this product ever ended up on Grenfell Tower,” said Murtagh. “Similarly, given the fire performance characteristics of these ACM cladding panels, it is no surprise in my view that they performed so poorly in combination with a range of insulation types in the recent series of large-scale tests by the Department for Communities and Local Government (DCLG).” said Murtagh added that fire safety is an ‘extremely complex’ field and that any investigation needs to consider a wide range of factors.

The majority of the insulation purchased for use in a refurbishment of Grenfell Tower prior to the fire was Celotex’s RS5000 polyisocyanurate foam (PIR) insulation board. However, Kingspan confirmed in July 2017 that a small amount of its Kooltherm K15 phenolic insulation product had also been used without its knowledge and that it had no involvement in the design or specification of the refurbishment.

UK: The British Rigid Urethane Foam Manufacturers’ Association (BRUFMA) has said that the materials tested so far by BRE Group, following the Grenfell fire in June 2017, do not meet building regulations and would never be recommended or approved for use by the members of BRUFMA in a real building.

The Department for Communities and Local Government (DCLG) has commissioned six BS 8414 tests using a combination of materials, including the make-up of the outer cladding system. The first aluminium composite material (ACM) cladding test, carried out by BRE combined an assembly of polyisocyanurate (PIR) insulation used in conjunction with an unmodified polyethylene filled ACM cladding panel. Both PIR foam and mineral wool are being tested with each cladding system.

BRUFMA described the situation as ‘worrying’ that a number of buildings have been identified with this combination, indicating a lack of compliance to existing rules and regulations. However, it has advised that all six tests should be completed satisfactorily before any analysis is drawn and remedial action is proposed by the government. It also highlighted that PIR insulation manufactured in the UK and Ireland that is recommended for use in high-rise buildings is tested with the BS 8414 fire test as part of a complete ventilated rainscreen system.

UK: Kingspan has confirmed that a limited amount of its Kooltherm K15 phenolic insulation product was used in Grenfell Tower. In response to a report by Channel 4 News the insulation producer said that a ‘very small quantity’ of the product had been used without its knowledge in a façade refurbishment of the high-rise tower. The building subsequently suffered a fire in June 2017 in which at least 80 people are believed to have died or gone missing.

“Kingspan had no involvement in either the design or the specification of the refurbishment of the Grenfell Tower facade, and neither Kingspan insulated panels nor Kingspan façade systems were used on Grenfell Tower,” said Kingspan in a statement. It added that following the fire it became aware that a limited quantity of Kingspan Kooltherm K15, less than 5% of the estimated total amount of insulation used on the building façade, was sourced by a third party distributer and supplied to contractors involved in the refurbishment. It impressed that, “It appears that Kooltherm K15 has been used without our knowledge, as part of a combination for which it was not designed, and which Kingspan would never recommend.”

The majority of the insulation purchased for use in the building refurbishment was Celotex’s RS5000 polyisocyanurate foam (PIR) insulation board. This product has been stopped for use in rainscreen cladding systems for buildings over 18m tall whilst the investigation into the Grenfell fire continues.

UK: The British Rigid Urethane Foam Manufacturers’ Association (BRUFA) has warned against ‘misleading’ claims being made in relation to the Grenfell Tower fire ahead of a government investigation. In a statement the body for the rigid polyisocyanurate (PIR) and polyurethane (PUR) Insulation Industry in the UK said it would challenge and correct any misleading allegations about the incident and provide information to assist an ‘accurate’ analysis. It added that the PIR and PUR insulation industry is an established and responsible one with a usage of over 50 years in the construction sector.

“We have a growing concern that misleading claims, supported by selective data are gaining traction and being reported as facts. If this supposition takes hold before the enquiry has established the truth of the matter, there is a danger it will lead to the wrong conclusions and decisions, that will do nothing to improve the future safety of buildings, including high-rise tower blocks. It may also lead to behavioural changes that could be detrimental to the future welfare of the built environment,” said BRUFA.

The UK government has appointed Martin Moore-Bick, a former judge, to head the public inquiry into the fire. As well as investigating the incident, the inquiry is expected to recommend changes to national building regulations.

UK: Celotex has stopped supplying its RS5000 polyisocyanurate foam (PIR) insulation board product in rainscreen cladding systems for buildings over 18m tall. The decision is a temporary one whilst an investigation into the Grenfell Tower fire continues. The subsidiary of Saint-Gobain previously confirmed that its product was purchased for use in a refurbishment project at the building. The fire is believed to have killed 79 people.

The insulation producer said that safety testing had been undertaken on its RS5000 product as part of a ‘particular’ rainscreen cladding system. It added that, “…any changes to components of the cladding system or construction methods used need to be considered by the relevant building designer.”

The decision by Celotex follows an announcement by the Metropolitan Police that insulation samples collected from Grenfell Tower combusted quickly in tests. The authorities are examining aluminium composite tiles, the insulation behind it and how these tiles were fixed to the building as well as how they were installed. The aluminium composite tiles have also failed initial safety tests.