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).

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