About
Whittemore Company
For over a century, Whittemore has produced expanded vermiculite and perlite engineered for demanding applications. Our controlled processing delivers clean, consistent materials with repeatable performance at scale.
Contact UsOur Story
Over a Century of Innovation
& Family Leadership
A Legacy Begins
Founded in 1919 in Roslindale, Massachusetts, Whittemore Company began as a distributor of feed, grain, and coal.
1919
Among the First to Commercially Expand Perlite
In 1949, the company made a pivotal shift by expanding into mineral processing, operating one of the first perlite furnaces in the U.S. Today, Whittemore proudly holds the distinction of being the longest continuously operating expander of Perlite in North America.
1949
Family Ownership, Long-Term Vision
In 1973, Gus and Kathy Sheehy acquired the company and relocated it to Andover, MA. A second move in 1985 brought operations to their current home in Lawrence, MA, positioning Whittemore for long-term growth. That same decade, Jeffrey Sheehy Sr. joined the business after college, representing the second generation of Sheehy leadership.
1973
Expanding into Vermiculite Processing
Further expansion came in 1993 with the addition of vermiculite processing and a custom blending line, enabling the company to meet increasing demand for tailored materials in the industrial, construction, and horticultural markets.
1993
Modernizing the Legacy
The third generation entered in the 2010s: Bridget Sheehy joined in 2014, followed by Jeffrey Sheehy Jr. in 2016, bringing valuable experience from consulting and real estate. Their involvement has helped drive a new era of strategic growth and modernization.
2010s
Consistent Materials. Trusted Performance.
Today, Whittemore manufactures a broad range of standard and customized materials, continuing its legacy of quality, innovation, and three generations of family-driven leadership.
Today
Get In Touch
Request a Quote or Sample
Let us match the right material to your application and send you a custom quote.