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.

China: Beijing New Building Materials (BNBM)’s operating income grew by 9% year-on-year to US$1.57bn in the first half of 2023, from US$1.44bn in the same period in 2022. Its net profit increased by 19% to US$251m from US$211m. The company said that it had a total gypsum wallboard production capacity of 3.4Bnm²/yr and that it was the world’s largest gypsum board group.

Parent company China National Building Material (CNBM) reported separately that its total sales of gypsum wallboard remained stable in the first half of 2023, at 1.09Bnm². It said “The supply of gypsum board is stable, but affected by the weak operation of the real estate market. The demand is insufficient and the operation of the industry is under pressure.” It added that BNBM built four “nearly zero emission” gypsum board production lines in the reporting period.

China: Finland-based Valmet has received an order from Shanxi Qiangwei Paper to supply a machine vision system. The scope of supply includes an IQ Web Inspection System, an IQ Web Monitoring System and winder control with target-stop functionality. The investment aims to improve the operating efficiency and optimise the final paper quality of a paper production line.

Valmet is a global developer and supplier of process technologies, automation and services for the pulp, paper and energy industries. It is based in Espoo.

Shanxi Qiangwei Paper is located in the Shouyang Industry District of Jinzhong in Shanxi province. It mainly produces paper for gypsum wallboard products as well as packaging paper. It has a production capacity of 1.4Mt/yr.

China: BNBM has held a high level discussion and information exchange with the China Construction Eighth Engineering Division Corporation (CSCEC 8). Senior representatives of both companies attended the event. Dong Zhanbo, assistant general manager and chief engineer at BNBM, commented that both companies have a good relationship and they share ambitions for low-carbon future. He hoped that further high-level communication between the companies and future meetings could lead to more extensive and in-depth cooperation. Zhang Guangtao, general manager of the Procurement Management Department of CSCEC 8, expressed the hope that the two companies could work together more closely.

CSCEC 8 is a subsidiary of the China State Construction Engineering, one of the world’s largest construction companies, both within China and worldwide.

China: Saint-Gobain has inaugurated a new 37Mm²/yr gypsum wallboard plant in Yuzhou, Henan province. The site will also produce 150,000t/yr of plaster. The plant will also use over 400,000t/yr of industrial by-products to increase its sustainability. Other initiatives include using renewable electricity, installing solar panels, using electric-powered forklift trucks and recycling all of the plant’s gypsum waste.

France-based Saint-Gobain has been present in China since 1985 and it employs more than 8000 people. The Yuzhou plant is the company’s sixth unit in the country. Construction of the site was supported by a green financing loan, implemented with BNP Paribas.

China: BNBM’s operating income fell by 6% year-on-year to US$2.90bn in 2022 from US$3.07bn in 2021. Its net profit dropped by 11% to US$457m from US$511m. Parent company China New Building Material (CNBM) reported that its sales volumes of gypsum wallboard declined by 12% to 2.09Bnm² from 2.38Bnm². It noted that, despite prices for raw materials and energy increasing in 2022, the poor local real estate market had led to a decline in demand for wallboard. It added that performance in Tanzania had grown in the reporting year and that new projects in Uzbekistan and Thailand remained on track. The group said that its 50 gypsum wallboard production lines had achieved “nearly zero emissions” in 2022.

China: France-based Saint-Gobain will commence a capacity expansion of its Yangzhou, Jiangsu, gypsum wallboard plant in mid-late 2023. China Daily News has reported that producer expects to commission the expanded plant in 2024.

Asia-Pacific regional CEO Ludovic Weber said that the project is a response to ‘soaring’ demand in Eastern China. Saint-Gobain currently operates four gypsum wallboard lines across the country.

China: China National Building Material (CNBM) expects its profit to decline by 50% year-on-year in the first nine months of 2022. The group said that this will be due in part to reduced gypsum wallboard sales and a 'substantial' decline in the value of its financial assets.

China: BNBM’s operating revenue grew by 2.4% year-on-year to US$1.50bn in the first half of 2022 from US$1.46bn in the same period in 2021. Its net profit fell by 11% to US$237m from US$266m. Parent company CNBM reported that its sales volumes of gypsum wallboard fell by 5.8% to 1.09Bnm² from 1.16Bnm2. It said that continued coronavirus lockdowns and problems in the real estate market had affected market demand. It added that the price of raw materials and energy had also risen, leading to increased production costs and mounting product prices.

China: BNBM’s operating income grew by 25% to US$3.33bn in 2021 from US$2.66bn in 2020. Its net profit rose by 23% to US$554m from US$451m. Its production and sales volumes of gypsum wallboard increased by 19% to 2.43Bnm² and 18% to 2.38Bnm² respectively. It reported a gypsum wallboard production capacity utilisation rate of 78%. The group added that data from the Gypsum Building Materials Branch of China Building Materials Federation showed that national wallboard production capacity was 4.90Bnm²/yr and that production and sales were 3.51Bnm² in 2021.

Parent company CNBM separately reported that the group raised its average wallboard selling prices by 7%. It said it put up its prices in the reporting period due to high prices of coal, gypsum, paper and other raw materials. Internationally, the group said that a new wallboard plant in Tanzania had started operation in 2021 and that a new plant in Uzbekistan is still being built.