

SGI
What lies below
is what lies ahead
With over 90 years of superior service, Specialty Granules (SGI) is a leading aggregates and mining company supplying specialized products to the North American building materials industry. Headquartered in Hagerstown, Maryland, SGI has four production plants strategically located across the U.S. SGI is committed to serving its customers’ needs with industry-leading R&D, innovative products and high-touch service.
Project Spotlight
SGI is the market-leading provider of roofing granules in the United States
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4 Production Facilities
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90 Years in Operation
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500 Employees
Our Leadership Team

Justin Dunlap
President

Matthew McClure
Vice President, Roofing Operations

Damean Speck
Vice President, Finance

Daniel Rardon
Senior Director, Research & Development

Timothy Dull
Senior Director, Human Resources

Jason Clark
Senior Director, Innovation and Sustainability

James (Mike) Cahill
Senior Director, Manufacturing

Douglas Cechovic
Senior Director, Business Development - Roofing