Gypsum industry news

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.

Grenzebach said earlier this month that it is going to invest around Euro2m on growing its presence in Pune. The current sales and service branch will be merged with a new production site in the city in Maharashtra. The site will be used for the assembly of conveyor equipment and welding work for dryers and lehr ovens for the glass industry. Production at the new unit is expected to start in October 2023 and it will create around 30 new jobs.

The decision by the Germany-based equipment supplier to expand in India follows Saint-Gobain’s expansion plans in India. It said in late 2022 that it was planning to spend US$215m towards capacity expansion plans in 2023 as part of a larger investment in the region, of US$970m between 2022 and 2025. Its stated aim for the new investment is to grow its revenue to US$4.4bn in 2032 from US$1.5bn in 2022. To break this down, half of the group’s turnover in India comes at present from glass-related businesses, 30% from gypsum and construction chemicals and the rest from abrasives, ceramics and life sciences. Some examples of this planned investment include the acquisition by Saint-Gobain of Rockwool India, a stone wool manufacturer, in February 2023 and an agreement to buy UP Twiga Fiberglass, a glass wool producer. Saint-Gobain is the biggest gypsum wallboard producer by capacity in India with four plants, followed by USGKnauf, which runs two plants, and various independent producers.

Growing the wallboard market in India has long seemed like an enticing prospect given the country’s demographics, low production capacity per capita compared to Europe and North America, and sustainability trends. However, despite all of this, it is taking a long time to get there. One commentator on LinkedIn has suggested that this may be down to reticence from the construction sector to adopt the product. In his view wallboard in India has mainly been used for ceilings and for commercial and industrial applications but not for residential projects. Producers, such as Saint-Gobain are likely to be well aware of this. So it is interesting to note that two projects in India picked up awards in Saint-Gobain’s International Gypsum Trophy in 2023.

On the crude gypsum side, data from the Indian Bureau of Mines and the United States Geological Survey (USGS) show that India produced an estimated 4.3Mt of gypsum from its mines from reserves of 37Mt. These reserves are far smaller than other countries with large populations such as China, the US, Brazil or Türkiye. The country also produced an estimated 2.1Mt of flue gas desulfurisation (FGD) gypsum in the 2023 – 2023 financial year. However, the Cement Manufacturers Association (CMA) estimates that its sector used 13 – 17Mt in 2020 – 2021 when cement production was 331Mt and that this is forecast to rise to 20 – 25Mt in 2024 – 2025 when cement production reaches 491Mt. This corresponds to the 4 – 5% of gypsum that it is added to clinker when grinding it to manufacture ordinary Portland cement (OPC) and other cement types.

In acknowledgment of this gap between mining and usage, the Department for Promotion of Industry and Internal Trade (DPIIT) started promoting recycling gypsum from fertiliser production and power plants in May 2023. So far, its main focus has been on improving access to phosphogypsum stockpiles, although the target for FGD production is an ambitious 9.9Mt by 2025 – 2026. Unsurprisingly, gypsum exporters have benefitted from this situation. Oman, reportedly, exported nearly 5Mt of gypsum to India in 2022. Historically, Thailand and Iran have also supplied the Indian market with gypsum.

India remains the great maybe for wallboard adoption outside of North America and Europe. The latest round of investment by Saint-Gobain and Grenzebach may yet deliver on this. Both companies are looking at a range of light materials including glass and insulation not just wallboard. So far though, the main merger and acquisition activity by Saint-Gobain has been targeted on insulation companies. Once or if Saint-Gobain or anyone else starts buying gypsum companies or building new plants then we will have a sense that something is changing. Alongside this, the DPIIT’s plans to recycle more gypsum may help bring further attention to the local gypsum sector.

Eurogypsum added its views on the European Union’s (EU) proposed Critical Raw Materials Act (CRMA) last month. It wants gypsum to be added to the bill’s list of critical and strategic raw materials. It is not surprising that the European federation of national associations of producers of gypsum products might want to do this. However, when compared to rare earth minerals of the sort required to manufacture batteries for electric vehicles (EV), gypsum doesn’t seem all that, well, rare.

What may be rare though is people’s patience with new gypsum mines. The association’s argument is that gypsum is indeed abundant in the EU but that accessing it is increasingly becoming difficult. The EU’s sustainability agenda has made the energy efficiency of buildings as important as reducing CO₂ emissions from the transportation sector. Gypsum and other materials used to make lightweight building materials are a way of renovating existing buildings and improving energy efficiency. Therefore it suggests that the act should either recognise gypsum as strategic or introduce a new ‘essential’ category. This would then make the process of extracting gypsum more easy.

This approach ties back to initiatives such as one by the Federal Commission on Geosciences (BLA-GEO) in Germany, which previously started to compile an inventory of the nation’s gypsum deposits with the intention of putting this in front of policy makers. Nor is the gypsum sector alone in targeting the potentially lucrative retrofit market. In May 2023 Daikin, Danfoss, Knauf Insulation, Rockwool, Saint-Gobain, Signify and Velux signed an agreement to promote building energy efficiency in Central and Eastern Europe (CEE). Radek Bedrna, Knauf Insulation’s managing director for Eastern Europe and Middle East, noted that two thirds of the 43.6m homes in single- and multi-family houses in the CEE region were reportedly built before 1989 and are energy inefficient. The European Commission places transport-related greenhouse gas emissions at about 25% of the region’s total. Renovating buildings fully, by contrast, could save up to 5% of the EU’s emissions. Targeting transport emissions may be a higher priority for the EU but the savings from retrofitting are not trivial either.

Then - on cue in mid-June 2023 - there was an example of the difficulties gypsum product producers can face with building new quarries or enlarging old ones when expansion plans for a gypsum quarry supporting Placoplatre’s wallboard plant in Chambéry in France were scaled back from local opposition. The subsidiary of Saint-Gobain met similar issues in late 2022 when a public enquiry started examining its plans to build a new quarry at Fort Vaujours, Seine-Saint-Denis. This site is intended to serve the Vaujours gypsum wallboard plant as a replacement for its Bernouille quarry after the latter closes in 2026. This one has a happier ending, for the gypsum sector at least, since the project received an environmental permit in late May 2023. One of the key issues that came up in the enquiry was a disagreement over the means of extraction. A local environmental group favoured underground mining but an open-cast approach was preferred by the producer as it would yield much more gypsum. The latter was eventually approved.

What this suggests is that making gypsum an ‘essential’ raw material in Europe requires engagement with the general public as much as legislators. Some people may not like having a wind farm built near where they live but the chances are that there will be less opposition than building a new coal mine. Digging up new gypsum deposits should be presented as more like the former than the latter. Whizzing around in a new EV is generally seen as being more fun than bragging about how great the lamba factor is for one’s house. However, this may change if energy prices keep ticking upwards. Gypsum may not be rare but Eurogypsum and others can make a strong case for it being essential.

Gypsum wallboard or drywall got name-checked by the commander-in-chief of the US last week. President Joe Biden announced during his State of the Union Address to the US Congress on 7 February 2023 that he was going to require that, “all construction materials used in federal infrastructure projects to be made in America.” He then expressly mentioned wallboard along with lumber, glass and fibre-optic cables before adding the catchy sound-bite, “American roads, bridges, and American highways are going to be made with American products as well.” Although for the wallboard sector he might as well have been saying that American walls are going to be made from American wallboard.

Biden’s focus on gypsum wallboard and other building materials is linked to the US$1.2Tn Infrastructure Bill that was signed in late 2021. The White House Office of Management and Budget (OMB) issued guidance in mid-2022 on how the spending should be targeted at US manufactured construction materials. At that time it excluded steel, cement, aggregates and additives but included non-ferrous metals, plastic and polymer-based products, glass, lumber and wallboard in its category of ‘construction materials’ that should be sourced locally. Its definition of ‘construction materials’ meant that the manufacturing process for the construction material occurred in the US. Although combining some of the materials above as a composite would then be classified as a ‘manufactured product,’ at which point, 55% of the total costs of the components would have to be mined, produced or sourced in the US to meet the so-called ‘Buy America’ preference. The new bit following Biden’s recent speech is that the OMB has released further guidance for the ‘construction materials’ mentioned above. So far, so much legalese.

Canada-based manufacturers of building materials are understandably wary of this kind of talk. However, ‘Buy America’ has been around since the 1930s and there have often been ways around it. As Jean Simard, the president and chief executive officer of the Aluminium Association of Canada, told CBC, in practical terms, the math is on Canada's side. "Canada represents about 70% of total US imports. That's not going to change."

Data on how much wallboard is actually exported from Canada to the US is hard to find but the former’s wallboard sector is about 10 times smaller than the latter’s. Most of the gypsum producers in Canada are owned by international companies with a presence in the US also. This created an interesting situation in October 2022 when CertainTeed Canada welcomed the Canadian International Trade Tribunal's ruling in favour of six provinces and territories' anti-dumping measures on imports of gypsum wallboard from the US. CertainTeed is owned by France-based Saint-Gobain, which also runs Continental Building Products. Together, Saint-Gobain is the second largest wallboard producer in the US by installed capacity. It seems unlikely that the current US rhetoric will reduce Canada’s exports of crude gypsum south of the border. Data from the United States Geological Survey (USGS) shows that the US imported 1.57Mt of crude gypsum from Canada in the first nine months of 2022, an increase of 12% year-on-year from the same period in 2021. Imports from Mexico had been similar so far in 2022, although they are down compared to 2021.

The other reason Biden may have mentioned wallboard specifically in a patriotic speech may have been in relation to the long-running defective China-based wallboard story from the early 2000s. Although the legal cases associated with this have mostly died down, one popped up in early February 2023 when Knauf and its China-based subsidiaries managed to avoid a product liability claim because the Florida-based plaintiff had waited too long. Knauf now owns the US’ largest wallboard producer, USG.

It is worth remembering that the US remains the largest wallboard market in the world by production capacity. So calls by a politician to ‘Buy America’ may be more for the ears of voters rather than industry. Although that’s not to say that the situation won’t change in the future. The examples above also show that the US may have been guilty of dumping wallboard upon its neighbours and that the two largest producers in the US are both foreign owned. The other thing that Joe Biden said in his State of the Union Address was that buying American was “totally consistent with international trade rules.” This comment may have been made in response to European criticism of some of the implications of the Inflation Reduction Act with its incentives for industrial supply chains supporting renewable energy production and electric vehicles, be they based in the US or in ‘friendly’ countries. The wallboard sector seems unlikely to be caught up in this directly but protectionism is in the air. How this manifests in corporate strategy over the next few years may be telling.

Two news stories to note over the last two months indicate growth in the gypsum wallboard market in Romania. Firstly, Knauf announced plans in mid-October 2022 to build a new 30Mm²/yr gypsum wallboard plant at Huedin in Cluj County. Then, Germany-based Grenzebach’s local subsidiary revealed that it had broken ground on the construction of an upgrade to its Iasi production centre.

Knauf’s announcement follows work by the existing wallboard producers with plants in the country to increase their own local capacity. Saint-Gobain started building a new production line at its Turda plant in mid-2021 at a cost of Euro45m. It hopes to have the project completed by April 2023. Etex started work in mid-2022 on a Euro6m sludge drying unit at a coal-fired power plant in Oltenia that will supply synthetic gypsum for use at its Turceni plant. It is also working on logistics upgrades to Turceni and a separate plaster plant at Aghiresu.

Graph 1: Growth rate of the construction market in relation to market volume in selected emerging countries, 2020 – 2030. Source: Saint-Gobain financial report using data from IHS.

An indication of Saint-Gobain’s interest in the Romanian market can be seen in its universal registration document for 2021 where it outlined its strategy. It presented a graph of forecast growth rates in construction markets in selected developing markets between 2020 and 2030. The countries that are underlined in Graph 1 (above) are those where Saint-Gobain made large acquisitions or investments in 2021. Romania is interesting on this graph because it is the European country with the largest predicted growth rate. It also has a relatively low market volume suggesting potential for market growth, although note that the graph only shows selected countries.

Another reason why Knauf might be interested in Romania is that it is the largest country in the European Union in which the company does not have a wallboard plant. Knauf’s own take from its press release about why it decided to build a plant in Romania was that local per capita consumption of gypsum wallboard was around 3m²/yr compared to at least 6m²/yr in more mature markets elsewhere in Europe.

Etex’s subsidiary Siniat Romania reported a 20% year-on-year rise in turnover to Euro60m in 2021. This compares to a 24% rise in turnover to Euro307m by Saint-Gobain Romania. Andrei Popa, Etex’s Country Sales Manager Romania & SEE, told Agenda Constructiilor that Siniat Romania’s turnover grew by 25% year-on-year in the first eight months of 2022. However, it is unclear what difference Etex Group’s acquisition of insulation producer URSA in June 2022 made to the figures in Romania. Popa also revealed that the rise in turnover so far in 2022 was mainly down to price rises. This in turn had been promoted by mounting energy costs, particularly gas. The company described itself as a ‘big consumer of gas’ and reported that the price had risen seven times over the past year. One more point of interest to mention is that Popa described Etex as one of the largest exporters in the country, with 40% of local production sent over national borders. This also aligns with what Knauf said about its new plant. It intends to deliver half of the production from its proposed plant at Huedin to Hungary, Serbia and the Republic of Moldova. The other half will serve the domestic market in the north of Romania with imports from Bulgaria expected to continue to supply the south of the country.

The data above suggests why Saint-Gobain, Etex and Knauf have all invested in wallboard production units in Romania over the last two years. The local market has growth potential and the companies are also focused on exports to neighbouring countries. All this investment may also have contributed to Grenzebach’s decision to enlarge its production site at Iasi too. The ‘fly in the ointment’ here in the short term is the disruption to energy markets caused by the war in Ukraine. Siniat Romania mentioned its concern over gas prices above. Saint-Gobain also made similar comments on a general basis for Europe in its nine month financial results in late October 2022. It said that it was preparing continuity plans for its gas-consuming plants in Europe but added that its gypsum wallboard production lines were ‘extremely flexible.’ However, Romania is better prepared for problems with gas supplies compared to elsewhere in Europe because it produces around 90% of its requirements locally. Despite energy concerns at the moment, the long term potential for the wallboard market in Romania remains promising.