Company Overview

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 nation-wide. SGI maintains a commitment to service based on an in-depth understanding of customers’ needs and an ability to translate that knowledge into innovative products.

SGI is an operating subsidiary of Standard Industries. Standard Industries is a privately-held global industrial company operating in over 80 countries. The Standard ecosystem spans a broad array of holdings, technologies and investments—including both public and private companies from early to late-stage—as well as world-class building materials assets and next-generation solar solutions.

Our Values

We live by our values. Our entrepreneurial culture empowers employees to take risks and effect lasting change, enabling us to evolve our industry and our communities. Our collaborative culture connects our teams, customers and partners all over the world to bring fresh perspectives to the fore and develop industry-changing solutions. We inspire one another to exceed expectations—including our own.

Inclusion & Diversity

As an industry leader, we believe that a diverse, equitable and inclusive organization is a driver of innovation, growth and transformation. This belief is central to our core values: to connect, empower, evolve and inspire.

What it means to us:
Inclusion and diversity mean fostering an inclusive culture that enables us to attract a more diverse workforce and harness the power that comes from it. Beyond the social responsibility, a diverse workforce also gives us a competitive edge—strengthening relationships, improving collaboration and bringing an array of different backgrounds and opinions to spur creativity and innovation.

We focus on three central commitments:

  • TALENT. We will attract and recruit the best and most diverse talent to drive innovation, collaboration and growth.
  • CULTURE. We will build an inclusive culture that nurtures diverse talent.
  • COMMUNITY. We will make a difference in the communities where we live and work, ensuring inclusion and diversity is reflected in our community engagement, sustainability and philanthropic efforts


For more than 90 years, SGI has been a leading producer of semi-ceramic coated, colored mineral granules for the North American residential and commercial roofing industry. The company’s longevity is a testament to its dependability as a supplier and the durability of its products.

Throughout its history, SGI’s primary focus has been providing superior service to its customers. In addition to excellent customer service, the company strives to be an environmental steward in the communities in which it operates. SGI provides employees with a safe, healthy work environment and is committed to developing employees throughout their careers.

SGI’s Headquarters and Technical Center are located in Hagerstown, Maryland. The company operates four manufacturing locations across the US — Blue Ridge Summit, Pennsylvania (Charmian); Annapolis, Missouri; Ione, California; and Pembine, Wisconsin (Kremlin).

Company Summary
Specialty Granules
Number of Employees
(301) 733-4000
13424 Pennsylvania Avenue
## 303
Hagerstown, MD