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Business Details
50+ Years
experience
Trusted Cement Solutions for North American Construction
St Marys Cement has been a leading producer of cementitious materials in the Great Lakes Region since its founding in 1912. With six strategically located plants serving Canadian and US customers, the company has participated in landmark projects such as the CN Tower, Roy Thompson Hall, and Darlington Nuclear Station. Our products undergo rigorous testing to meet the dynamic demands of modern construction. Established in St. Marys, Ontario, the company has grown alongside its community while maintaining a commitment to reducing its carbon footprint through innovative solutions like Portland Limestone Cement. With over a century of operational history, we combine deep industry experience with a focus on sustainability, offering a comprehensive range of products including Portland Cement, Blended Cement, Slag Cement, and Masonry Cements.

Our distribution network spans the Great Lakes Region via barge, rail, and truck, serving diverse markets across Ontario, Illinois, Michigan, New York, Ohio, Wisconsin, New Brunswick, Nova Scotia, Rhode Island, Maine, and Quebec. We prioritize quality management through ISO 9001 certification, environmental stewardship via ISO 14001 standards, and occupational health and safety excellence under ISO 45001. Our Verdera co-processing initiative repurposes industrial byproducts into low-carbon fuels, demonstrating our leadership in sustainable construction solutions while maintaining strong community partnerships through initiatives like the St. Marys Community Liaison Committee.
Services
Portland Cement Blended Cement Slag Cement Masonry Cements Verdera Co-processing
Details
  • Year established: 1912
Highlights and features
  • We offer over 110 years of cement production expertise in the Great Lakes region
  • Our ISO-certified quality management systems ensure consistent product excellence
  • We implement innovative low-carbon fuel alternatives through Verdera co-processing
  • Our extensive distribution network serves 11 North American jurisdictions
  • We maintain four distinct cement product lines meeting all construction requirements
Associations and certifications
  • ISO 9001
  • ISO 14001
  • ISO 45001
  • ISO 50001
Services
Portland Cement
Our Portland Cement line includes general-use, high early strength, and silica fume-enhanced formulations meeting ASTM and CSA standards. These versatile products suit infrastructure projects, building foundations, and precast concrete applications. Available in bulk and bagged formats, our cement formulations provide consistent performance while incorporating sustainability improvements like reduced CO2 emissions through optimized production processes.
Blended Cement
Blended cement products combine Portland cement with silica fume to create high-performance concrete solutions. These formulations offer enhanced strength and durability for challenging applications while reducing environmental impact through industrial byproduct utilization. Ideal for high-rise construction projects requiring superior structural performance and LEED certification contributions.
Slag Cement
Slag cement solutions blend ground granulated blast furnace slag with Portland cement to create durable, high-strength concrete mixtures. This environmentally responsible product improves concrete performance in aggressive environments while diverting industrial byproducts from landfills. Particularly effective for infrastructure projects requiring extended service life and chemical resistance.
Masonry Cements
Type N, S, and M masonry cements deliver optimal workability and bond strength for bricklaying and block construction applications. Formulated to meet ASTM C91 and CSA A3002 standards, these products ensure consistent mortar performance in both load-bearing and non-load-bearing wall systems. Available in convenient bagged formats with moisture protection barriers.
Verdera Co-processing
Verdera co-processing services transform industrial byproducts into low-carbon alternative fuels for cement manufacturing. This circular economy solution reduces landfill waste while lowering greenhouse gas emissions by up to 900,000 tonnes annually. We provide technical evaluations and transportation services for qualifying waste materials, supporting clients' sustainability goals through scientific repurposing.
Questions
What types of cement products does St Marys Cement offer?
We provide Portland Cement, Blended Cement, Slag Cement, and multiple Masonry Cement varieties including Type N, S, and M formulations for diverse construction applications.
How does St Marys Cement support sustainable construction?
Through our Verdera co-processing initiative, we repurpose industrial byproducts as low-carbon fuels while offering Portland Limestone Cement that reduces CO2 emissions by 10% compared to traditional formulations.
What quality certifications does St Marys Cement hold?
Our facilities maintain ISO 9001 (Quality Management), ISO 14001 (Environmental Management), ISO 45001 (Occupational Health & Safety), and ISO 50001 (Energy Management) certifications.
Where are St Marys Cement products available?
We serve markets across Ontario, Quebec, and Atlantic Canada, plus Great Lakes states including Michigan, Illinois, Ohio, Wisconsin, and New York through our distribution network.
What construction projects are St Marys cement products suitable for?
Our products meet requirements for infrastructure projects, high-rise construction, residential developments, and specialized applications requiring enhanced strength or environmental performance.