PARIS, France, July 31, 2025 – Saint-Gobain Group has acquired the business assets of Interstar Materials Inc., expanding its footprint in North America’s construction chemicals sector. The acquisition marks Saint-Gobain‘s entry into granular concrete pigments and reinforces its regional growth strategy following earlier deals involving Chryso in 2021 and GCP Applied Technologies in 2022.
With over 30 years of manufacturing experience, Interstar produces materials for the decorative concrete industry across North America. Its product portfolio serves multiple segments, including ready-mix, stamped concrete, block, pavers, and precast applications.
With this latest acquisition, Saint-Gobain will add over C$20 million to its revenue and establish a presence in the granular pigments industry in North America. The business will continue to operate from its headquarters in Sherbrooke, Quebec, and other facilities in Calgary, Alberta, and Junction City, Illinois. Saint-Gobain will retain the 55 employees of Interstar Materials to to strengthen its construction chemicals operations. .
“With this acquisition, we are continuing to strengthen our leadership in the Construction Chemicals segment,” said Mark Rayfield, president and CEO of Saint-Gobain North America. “Interstar Materials, Inc. is an ideal partner for Saint-Gobain, sharing our commitment to innovation and sustainable construction. I am excited to collaborate with the Interstar team and welcome their employees into our business. Together, we will continue to drive progress toward our mission of ‘Making the World a Better Home.’”
“This acquisition is a testament to our unwavering commitment to continually enhance our best-in-class product and service offerings, ensuring we meet and exceed our customers’ expectations,” said Steven Williams, president, construction chemicals, infrastructure, and commercial North America.
“The Interstar team and I are thrilled to join Saint-Gobain’s Construction Chemical’s business and work with the Chryso team,” said Zachary Gillman, president of Interstar Materials, Inc. “From the outset of the acquisition process, it was clear that our companies share common values – a commitment to quality, integrity, innovation, and growth. I am especially excited about the opportunities this partnership will create for Interstar employees as part of the Saint-Gobain Group.”
Saint-Gobain will continue to operate the granular pigment and dispenser business under the Interstar brand within US and Canada.
The announcement follows other investments announced by Saint-Gobain:
- In February, Saint-Gobain announced the expansion of its NorPro Ceramics business with a new facility in Niagara County, New York.
- First announced in 2023, Saint-Gobain will complete expansions at plant facilities later this year to increase production capacity and meet demand in the United States, including in roofing at its facility in Peachtree City, GA, gypsum wallboard in Palatka, FL and glass mat in Oxford, NC.
- Saint-Gobain and CertainTeed Canada will complete an investment to upgrade equipment at its gypsum facility outside Montreal, which will increase the plant’s production capacity by up to 40%. The plant will also be powered by renewable electricity from Hydro-Quebec, making it the first zero-carbon wallboard plant in North America for scope 1 and 2 emissions.
Source: Saint-Gobain
About Saint-Gobain
Saint-Gobain, founded in 1665 as a royal mirror-glass manufacturer, is one of the world’s oldest operating companies. Headquartered in Courbevoie, France, near Paris, the company designs, manufactures, and distributes materials and solutions for construction and industrial markets. Its offerings include glass, ceramics, plastics, abrasives, gypsum products, construction chemicals, and high-performance materials. With over 160 manufacturing locations in Canada and the United States, Saint-Gobain serves different sectors, including sustainable construction, building renovation, mobility, infrastructure, and various industrial applications. The company operates in 80 countries and employs around 160,000 people. Its 2024 revenue stood at €46.6B.
About Interstar Materials
Interstar Materials, founded more than 30 years ago, is a Canadian company specializing in decorative concrete additives and granular pigment technologies. Headquartered in Sherbrooke, Quebec, with operations in Calgary, Alberta, and Junction City, IL, the company is best known for its Granastar pigment used in ready-mix, stamped concrete, block, pavers and precast applications. Interstar serves the construction and concrete industries across North America, supplying pigments and admixtures for a range of decorative and structural applications. As of its acquisition by Saint-Gobain in July 2025, the company reported annual revenue exceeding C$20M and employed 55 people. Interstar continues to operate under its brand within Saint-Gobain’s construction chemicals business.