CertainTeed Recycle: Saint-Gobain Canada Expands Gypsum Recycling Efforts to Divert Thousands of Tonnes of Waste From Landfills

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SAINTE-CATHERINE, Quebec, September 10, 2026 --( BUSINESS WIRE )--Saint-Gobain Canada, leader in light and sustainable construction, announces today the launch of its new CertainTeed Recycle program in Quebec, through its subsidiary CertainTeed Canada, to help the construction industry divert gypsum waste from landfills. Following a successful pilot program with the city of Sainte-Catherine, CertainTeed's plant on the south shore of Montreal obtained approval from the Ministère de l'Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs (MELCCFP) to start receiving clean gypsum waste to be recycled and reintroduced in the production of its gypsum wallboards. The permit will allow CertainTeed's gypsum recycling program to divert up to 80,000 tonnes of gypsum waste per year when the program reaches full maturity. Expanding a successful recycling partnership CertainTeed Canada is officially launching its program with the support of its trusted recycling partner, New West Gypsum Recycling, that will run the gypsum recycling line at its Sainte-Catherine plant in the Greater Montreal Area. Both partners will build off the success of the existing recycling partnership with New West Gypsum in Vancouver, which surpassed 1,000,000 tonnes of recycled gypsum put back into production ack in 2023 – equivalent to an estimated amount of gypsum required to build approximately 250,000 new homes. Actively reducing Construction, Renovation & Demolition (CRD) waste in landfills According to RECYC-QUÉBEC, nearly 250,000 tonnes of gypsum waste are sent to landfills every year in Quebec. Gypsum waste disposed in landfills can contribute to the formation of hydrogen sulfide, a corrosive gas, increasing the risk of potential contamination of biogas produced at certain landfills, causing unpleasant odours and occupying limited landfill space that could otherwise be preserved. The right industry partners to build a circular ecosystem As part of the launch, CertainTeed is partnering with one of Canada's leading general contractors, Pomerleau, to divert gypsum waste from their job sites. Pomerleau is a partner that is committed, like Saint-Gobain, to attaining net-zero carbon emissions by 2050 with a clear sustainable development plan that guides their actions by placing environmental and social issues at the heart of their projects. CertainTeed is looking to continue working with like-minded and sustainability-oriented partners to divert and recycle gypsum waste from their job sites. Contractors interested in participating in the CertainTeed Recycle program can contact CertainTeed Canada's team to start their recycling journey. To further support the launch of the CertainTeed Recycle Program and to make gypsum recycling more accessible to contractors, a series of bins will be deployed on the south shore of Montreal at selected construction material distributors to collect clean gypsum waste at no cost, including: Another concrete milestone for the betterment of our sustainable operations As part of CertainTeed Sainte-Catherine's gypsum wallboards Life Cycle Assessment action plan, the launch of the gypsum recycling program is adding to the concerted efforts that led to the inauguration in September 2025 of North America's first zero-carbon (scopes 1 and 2) gypsum wallboard plant and the largest plant of its kind in the world. About Saint-Gobain Worldwide leader in light and sustainable construction, Saint-Gobain designs, manufactures and distributes materials and services adapted to the residential, non-residential and infrastructure markets. Its integrated and innovative solutions provide sustainability, performance and well-being for its customers. The Group is guided by its purpose, "MAKING THE WORLD A BETTER HOME". €46.5 billion in sales in 2025 More than 162,000 employees, locations in 81 countries Committed to achieving net zero carbon emissions by 2050 About CertainTeed With innovative building solutions made possible through its comprehensive offering of interior and exterior products, CertainTeed is transforming how the industry builds. As leaders in building science and sustainable construction, CertainTeed makes it easier than ever to create high-performance, energy-efficient places to live, work and play, so that together we can make the world a better home. A subsidiary of Saint-Gobain, one of the world's largest and oldest building products companies, CertainTeed has more than 6,900 employees and more than 60 manufacturing facilities throughout the United States and Canada. www.certainteed.com View source version on businesswire.com: https://www.businesswire.com/news/home/20260910539989/en/ Contacts Contact for media only: Alexandre Lainesse Public Relations Manager, Canada, Saint-Gobain North America [email protected] 514-973-1187

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