Gypsum industry news

UK: British Gypsum’s Robertsbridge plant has celebrated the 150th anniversary of the discovery of gypsum at the site in East Sussex. To mark the event the company held a family day with a range of activities, according to the Sussex Express newspaper. Tanya Young, the plant manager, said "Our legacy is grounded in this discovery, and it's incredible to see how gypsum remains an essential component in modern construction, proving its enduring value over the years." She added “The majority of our employees are locals, and we're proud to have generations of families who have been a part of the British Gypsum family for decades."

Belgium: Etex’s Building Performance division drove revenue in the first half of 2023 through price rises despite a softening in gypsum wallboard sales volumes. The group’s total revenue grew by 4% year-on-year on a like-for-like basis to Euro2.02bn in the first half of 2023 from Euro1.79bn in the same period 2022. Its earnings before interest, taxation, depreciation and amortisation (EBITDA) rose by 14% to Euro363m from Euro319m in real terms.

Bernard Delvaux, the chief executive officer of Etex, said “In the first half of 2023, Etex coped with an overall slowdown of the construction sector - both in new build and renovation - triggered by several elements leading to high volatility and uncertainty such as inflation that puts pressure on consumers’ buying power, higher interest rates and more restricted loan policies by banks. However, Etex managed to record improved sales compared to the first half of 2022 through swift adaptations to challenging market contexts and cost-to-price monitoring. While our volumes are slightly impacted, margins remain strong.”

Notable events so far in 2023 include Etex’s acquisition of UK-based Superglass Insulation in June 2023. It divested its two Russia-based units under its Ursa subsidiary in August 2023. It also acquired Betacon, a Romania-based company to secure raw material supply for wallboard activities in the country.

One can tell that gypsum wallboard is a popular product because companies keep trying to devise alternatives to it. A recent one is Breathaboard. The company making it, Adaptavate, announced in August 2023 that it had generated around Euro2.3m in its latest investment round. It is building a pilot production line in Bristol in the UK and attempting to licence its Breathaboard product, amongst other plans. Its take on wallboard is being marketed as a sustainable substitute that is made from crop waste, that sequesters CO₂ and that then can be composted at the end of its life. It is also promoting the product’s breathability and moisture buffering capabilities, hence the name.

Another new contender hoping to steal some of the gypsum wallboard market is Xeriant’s Nexaboard product. This one uses plastic waste as its alternative to gypsum. Florida-based Xeriant said in July 2023 that it had started to buy equipment and raw materials, was running pilot production and was testing its first samples. It too is working on getting its product used in pilot construction projects.

Both of these examples, and others over the years, have taken a pop at wallboard’s sustainability credentials. Adaptavate is rather quieter about what happens to all of that sequestered CO₂ when its product is composted and Xeriant does not mention the environmental impact of making the plastic it uses in the first place. Yet, it is a valid question to ask how sustainable is gypsum wallboard? This column has covered issues with the supply of raw gypsum from either natural, synthetic or recycled sources previously, so we will stick to the general picture here.

The late-lamented consultant Bob Bruce pulled together data from various studies for the Global Gypsum Conference in 2019 to estimate the CO₂ emissions from wallboard production. He estimated that the global average of CO₂ production by wallboard was around 2.4kg/m², equating to 24Mt/yr of CO₂ for the global wallboard industry. For reference, it is estimated by the Center for International Climate and Environmental Research - Oslo (CICERO) that the process emissions from clinker production alone released around 1.6Gt/yr of CO₂ in 2022. When compared by mass (as opposed to area) to other building materials, wallboard has a lower carbon intensity than many products such as glass, cement (made from clinker), plastics, steel and plywood. Timber, concrete and brick are all better than wallboard though. However, as Bruce pointed out, a lot more concrete is manufactured than wallboard. Bruce came up with a handful of suggestions for how wallboard production could reduce its CO₂ emissions such as the reduction of slurry water, local delivery, co-generation, increasing drying efficiency and so on.

The two big sustainability trends from the sector over the last year have been the drive to support higher recycling rates of gypsum and a move towards ‘greener’ sources of energy. This can be seen in the growing use of electrical energy from renewable sources such as the production of net zero CO₂ gypsum wallboard at Saint-Gobain’s Fredrikstad plant in Norway from April 2023. The group’s Montreal plant looks set to follow in 2024 following an upgrade, potentially making it the first net zero wallboard plant in North America. Chiyoda-Ute in Japan has also started using renewably-sourced electricity at its plants in Japan, but it is uncertain what other energy sources these sites are using. China-based BNBM also claimed in its half-year results that it had built four “nearly zero emission” gypsum board production lines in the reporting period.

Wallboard's market position in North America, Europe and elsewhere seems secure. However, it is in dynamic tension as it is both a potential replacement for more carbon intensive building materials and it could also be susceptible to new emerging products that can improve on its own emissions. The manufacturers of Breathaboard and Nexaboard are clearly hoping for the latter. Yet, as is often pointed out, giving more market share to wallboard from other common building materials could reduce CO₂ emissions from construction massively. The diversification of traditional heavy building materials companies such as Holcim into light building materials in recent years suggests that some businesses are seriously preparing for this possibility. No doubt, if global wallboard usage does start to rise significantly, the pressure will grow to make wallboard more sustainable and to devise even more alternative board products.

Canada/UK: Canada-based Solex Thermal Science has purchased UK-based Econotherm for an undisclosed sum. The acquisition is intended to expand Solex’s capacity to help its customers reduce the primary energy consumed to produce industrial goods
Lowy Gunnewiek, the chief executive officer at Solex, said “We at Solex are passionate about working with customers to understand their operational needs. Today’s announcement broadens our overall business portfolio to provide our global client base with an even deeper suite of best-in-class, sustainable solutions that align with their respective environmental, social and governance strategies.”

Solex Thermal Science sells indirect heat exchange products for the heating, cooling and drying of free-flowing granular materials such as solid granules, pellets, beans, seeds and particles. Since 1989 the company has installed more than 900 heat exchangers in more than 50 countries worldwide with applications such as fertiliser, oilseeds and industrial materials such as minerals, sands, chemicals and polymers. More recently it has expanded into the energy-transition sector with collaborations on decarbonisation applications such as industrial waste heat recovery, concentrated solar power and carbon capture.

Econotherm manufactures heat pipe waste heat recuperators, economisers, pre-heaters, steam generators and steam condensers. The company’s patented super conductor heat pipe technology is used in a wide range of applications across many industrial sectors. Its references include supplying a gas to air heat pre-heater on a gypsum kettle exhaust to British Gypsum.

France: Saint-Gobain recorded sales of Euro51.2bn during 2022, up by 16% year-on-year from Euro44.2bn in 2021. The group reported that its sales volumes fell by 1.3% year-on-year. It nonetheless recorded growth in revenues of 9.2% in Northern Europe, 8.2% in Southern Europe, the Middle East and Africa, 33% in the Americas and 19% in Asia-Pacific.

During the year, Saint-Gobain made Euro3.8bn-worth of divestments, including of its Polish and UK distribution businesses, and Euro1.9bn-worth of new acquisitions.

CEO Benoit Bazin said “In an unsettled geopolitical, energy and macroeconomic environment in 2022, the group once again delivered record results. The group’s profile has been profoundly optimised: one-third of the group’s scope has changed in the past four years and over 60% of our earnings now come from North America and emerging countries." Bazin continued "I am confident that 2023 will be a good year for Saint-Gobain. Our roadmap is clear: disciplined execution of the Grow & Impact strategic priorities, leveraging the strength of our operating model against the backdrop of a slowdown in new construction but good resilience in renovation."

UK/Ireland: Knauf UK and Ireland’s haulage contractor Nicholls has switched to using renewably generated liquefied natural gas (LNG) to power its trucks. The transition should reduce Knauf’s Scope 3 emissions generated by transporting its raw materials and products. Knauf’s emissions from deliveries represent roughly 23% of all Scope 3 emissions for the UK business.

Nicholls started trialling LNG powered trucks in 2018 and then built a local refuelling site. It currently uses 29 trucks that run on LNG. The haulage company still uses diesel power vehicles for some routes depending on distance and infrastructure.

UK: Knauf UK and Ireland has appointed Paul Campbell as its Commercial Director. He will be responsible for the strategic development of supply chains, customer support, marketing and technical functions. Campbell previously worked for British Gypsum for over 10 years in product management and marketing roles before becoming the Marketing & Technical Director, UK & Ireland at BMI Group in 2019.

UK: British Gypsum has started converting its heavy-good vehicle fleet fuel source to the biofuel Hydrotreated Vegetable Oil (HVO) from diesel. The subsidiary of France-based Saint-Gobain expects to use 75,000l/week of HVO. This means that around 40% of its UK fleet will now operate on HVO fuel, with a further 10% using Liquefied Natural Gas (LNG). The use of multi-fuelled vehicles at this scale is expected to reduce its carbon emissions by approximately 70% year-on-year.

To support the implementation of HVO vehicles, the company has made several upgrades to site infrastructure that include a HVO refuelling point at its Robertsbridge plant and a new fuel island capable of delivering 110,000l/week at its distribution centre in Gotham.

UK: The European Space Agency, University of Glasgow and others are using France-based Saint-Gobain's Bantycock, Nottinghamshire, quarry to test new drill bit designs for their Drill for Extensive Exploration of Planetary Environments Using Robots (DEEPER) project. The project aims to develop tens-of-metres-long spoolable drill 'strings' to help in the search for water on Mars. Researchers will use their prototypes to drill directly into the mine's gypsum deposits. Saint-Gobain said that the hydrated mineral gypsum provides a similar geological profile to that of Mars.

Gypsum wallboard production by Saint-Gobain subsidiary British Gypsum at its nearby Barrow upon Soar, Leicestershire, and East Leake, Nottinghamshire, gypsum wallboard plants relies on Bantycock gypsum.

UK: Knauf UK has announced a collaboration with Modulous, a company that supplies technology products to support offsite construction. The light building materials producer has become a supply chain partner with Modulous. It also gave Modulous space at its Sittingbourne headquarters site to build a demonstration module, which was completed at the end of 2021.

Liam Poole, the head of marketing at Knauf UK, said, “We came on board as an early supply-chain partner because Modulous has built an inspired solution to some of the biggest pain points in construction and development.”

Modulous is marketing a set of digital products that connect manufacturers, designers and clients in the construction sector. It claims it is an efficient way to develop residential buildings at speed and scale. The company offers a virtual design for any building, complete with product selections and assembly instructions, which contractors can then use to build modules and assemble them on site. Modulous uses a so-called ‘kit of parts’ to help contractors assemble the modules. Knauf’s contribution towards this includes products such as floors, external walls, interior partitioning systems and spray finishes.