About - Stewart Materials

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A privately held, Florida, aggregate material products company.

Since 1982, Stewart Materials has evolved to become one of the largest suppliers of inland sourced, process-controlled materials in the state of Florida. They enhance Florida life. Responsibly.

Materials supplied by Stewart Materials go directly to enhancing Florida’s nearly $70 billion annual tourism industry. These products enhance and renourish Florida beaches and golf courses, supply aggregate for roadway and other construction, and are used in projects as diverse as athletic fields, state and federal parks, wildlife habitats and the Herbert Hoover Dike.


Research, develop and safely recover Florida’s natural resources.

Reliably supply Florida-sourced, process-controlled material products.

Responsibly, sustain and enhance Florida’s environment, industries and infrastructure.

Leave a better Florida for future generations.

Our Accreditation Status

Our construction materials testing laboratory is accredited through the CMEC Accreditation Program and formally recognized as having the necessary quality management system in place to conduct tests in line with the standards and guidelines specified by AASHTO R18—the “Recommended Practice for Establishing and Implementing a Quality Management System for Construction Materials Testing Laboratories.”