Insulation industry news from Global Insulation

UK: France-based Saint-Gobain has completed its acquisition of façade mortars and external wall insulation (EWI) systems producer Kilwaughter Minerals. Kilwaughter Minerals operates a plant and limestone quarry in County Antrim, Northern Ireland, and three distribution centres in Great Britain and Ireland, with a total of 200 employees. Its brands include K Rend renders and K Systems EWI systems.

UK: Knauf Insulation has reopened its St Helens glass wool insulation plant in Merseyside following a 25,000t/yr capacity expansion. Local press has reported that the upgrade included the installation of a larger furnace for melting locally-sourced glass cullet. The new equipment allows for the addition of higher-thickness products to Knauf Insulation’s existing ranges.

Merseyside Mayor Steve Rotheram attended the reopening and noted the plant’s importance in continuing St Helens’ tradition of glass products manufacturing.

UK: Denmark-based Rockwool is reportedly in ‘advanced talks’ to acquire a 9.3 hectare site in Sutton Coldfield, West Midlands from Birmingham City Council. The site comprises Zone B of the Peddimore industrial estate, which is approved for light industrial production. Estates Gazette Interactive News has reported that the purchase advances Rockwool's on-going strategic expansion of its presence in the UK.

UK: Denmark-based Rockwool has acquired external thermal insulation composite systems producer Wetherby Building Systems. Reuters has reported that the newly acquired company will now operate as part of Rockwool Wall Systems, under the name Wetherby Wall Systems. The integration parallels that of previous Rockwool acquisitions in other markets, like Fast Wall Systems in Poland and Heck Wall Systems in Germany.

Rockwool CEO Jes Munk Hansen said “The share of stone wool insulation in the Wetherby business has been growing steadily, and we will be completing this transition to a fully stone wool-based portfolio, as we have done in other markets in the past.” He added that this will advance Rockwool’s transformation of the construction sector towards non-combustible façades.

Wetherby Building Systems managing director Bob Deane said “There is a long-standing relationship between Wetherby and Rockwool, and the match is strong on all significant drivers.”

UK: A team at the University of Exeter in Devon is investigating possible types of insulation for small-scale farms to produce using byproducts from crop harvests. The project, supported by construction engineering firm Local Works Studio, is part of the Ecological Citizens Network. It is intended to bolster rural economies, address industrial labour shortages and advance sustainable construction. Farmers Guide News has reported that an accompanying podcast and other publications will help to generate engagement.

Team leader Caroline Nye said "Participation and employment in a pioneering, environmentally sensitive new industry, centred in the countryside, could foster a closer engagement of deprived rural communities with the land and bring the benefits of a distributed local economy."

UK: The six-year public inquiry into the Grenfell Tower fire, which claimed 72 lives in 2017, has issued its final report, finding fault with ‘dishonest’ companies, as well as former governments and a disorganised response from the fire service. The inquiry criticised the role of cladding manufacturers, notably US-based Arconic, for its ‘systematic dishonesty’ in concealing the true fire hazards of its products. Arconic, which produced the Reynobond 55 polyethylene cladding used on Grenfell Tower, was accused of having hidden ‘very poor’ fire safety test results from the public and certification bodies. In the report, the cladding is described as ‘extremely dangerous’ when used in folded cassette form, and was ‘by far the largest contributor’ to the Grenfell fire.

The inquiry also named both Celotex and Kingspan as contributors to the incident. Celotex was accused of making ‘false and misleading claims’ by presenting its product to cladding contractor Harley Facades as being safe and suitable for Grenfell, even though ‘it knew that was not the case.’ Insulation producer Kingspan reportedly ‘misled the market’ by not revealing the limitations of its product, which was used on a small section of the building. In response to these findings, the inquiry has called for a revision in testing materials and designs for fire safety, advocating for transparency by making these test results publicly accessible. The findings of this inquiry lay the groundwork for potential criminal charges, with police and prosecutors indicating that investigations will continue until the end of 2025, and decisions on criminal charges expected by the end of 2026, according to a report by the BBC.

Kingspan said in a statement “We welcome the publication of today’s report which is crucial to a public understanding of what went wrong and why. It explains clearly and unambiguously that the type of insulation (whether combustible or non-combustible) was immaterial, and that the principal reason for the fire spread was the PE ACM cladding, which was not made by Kingspan. Kingspan has long acknowledged the wholly unacceptable historical failings that occurred in part of our UK insulation business. These were in no way reflective of how we conduct ourselves as a Group, then or now. While deeply regrettable, they were not found to be causative of the tragedy and Kingspan has already emphatically addressed these issues.”

A spokesperson for Celotex said “The publication of the Grenfell Tower Inquiry report marks the conclusion of the inquiry’s work and we are considering its contents with care. This review was a significant and thorough undertaking, and the results of that work were disclosed promptly and proactively to relevant stakeholders, including the Grenfell Tower Inquiry. Independent testing commissioned following the review demonstrated that the cladding system described in the Celotex RS5000 marketing literature met the relevant safety criteria. That system was substantially different to that used at Grenfell Tower. Decisions about design, construction and the selection of materials for the Tower were made by construction industry professionals.”

A spokesperson for Arconic subsidiary Arconic Architectural Products (AAP), which Building News reports supplied aluminium composite material used for the rainscreen at Grenfell Tower, said “The company respects the Inquiry process. AAP cooperated fully with the work of the Inquiry and will continue to engage with further legal processes. Together with other parties, AAP has made financial contributions to settlements for those affected, as well as to the restorative justice fund. Throughout the Inquiry, AAP has maintained a number of points: AAP sold sheets of aluminium composite material as specified in the design process. This product was safe to use as a building material, and legal to sell in the UK as well as the more than 30 other countries in which AAP customers purchased the product. We reject any claim that AAP sold an unsafe product. AAP regularly conducted tests of its materials using third-party testing bodies. Reports on these results were all publicly available, and AAP made these reports available to its customers. AAP did not conceal information from or mislead any certification body, customer, or the public.”

World: Market research firm Future Market Insights (FMI) has forecast a composite annual growth rate of 6% in the global polyisocyanurate (PIR) insulation market up to 2033. This will result in 81% decade-on-decade growth to US$25.6bn in 2033. FMI noted technical developments affecting the use of customised PIR boards in the prefabricated construction as a main driver of the growth. Nationally, the market will have a CAGR of 8% in China, 7% in India, 6% in the UK, 5% in Canada and 4% in Germany.

FMI said “In the rapidly changing world of PIR insulation, innovation and sustainability have emerged as dynamic forces reshaping the industry’s trajectory. The market is going through a fundamental shift, moving beyond its traditional role of providing insulation and into uncharted territory where cutting-edge technologies are poised to redefine its boundaries.”

UK: Saint-Gobain subsidiary Isover has installed water meters and monitoring technologies at its Runcorn insulation plant in Cheshire. The initiative aims to reduce the plant’s consumption of water by 30ML/yr, 30% of its use in 2030.

Plant sustainability champion Matt Hill said “Reducing water consumption in our production processes is central to our sustainability journey at Isover. Through investments such as these, we’re not only reducing our environmental impact but also demonstrating our unwavering commitment to building a more sustainable future." He added "By 2023, we had reduced our total water withdrawal by 22% compared to 2017, and thanks to these continuing improvements, we have already further reduced this by more than 20% in 2024 compared to 2023."

UK: Zotefoams has raised its sales by 14% year-on-year in the first four months of 2023. The company increased its insulation sales by 57% and its high-performance products sales by 46%.

CEO David Stirling will step down from his position in Zotefoams on 22 May 2024, when Ronan Cox will replace him.

UK: Knauf Insulation UK & Ireland is preparing to build a €200m rock mineral wool plant to supply the UK market. The company is currently discussing with the authorities where the plant will be situated. The unit will have a production capacity of over 100,000t/yr and will use low-carbon electric melting technology. It is anticipated the additional capacity will become available in 2026.

Neil Hargreaves, Knauf Insulation’s Managing Director for Northern Europe, said "Following the €50m investment across our two UK glass mineral wool plants in 2023 - 2024, this represents another exciting development for the business and our valued customers, as well as a further sign of confidence from Knauf Group in the future growth of the UK and Northern European mineral wool markets. The investment represents a step change in the capacity, capability, and sustainability of our UK rock mineral wool solutions, whilst significantly contributing towards Knauf Group’s ambitious sustainability goals."