Join the Cast Stone Institute®

Since 1927, the Cast Stone Institute has been the standard-bearer for quality, craftsmanship, and integrity in the cast stone industry. Membership isn't just a credential — it's a commitment to excellence and a connection to the people and resources that define the industry.

As a CSI member, you gain access to the technical resources, industry relationships, and professional support that help your business grow and your work stand out. Whether you're a certified producer, an associate supplier, or a design professional, CSI membership puts you at the center of the cast stone industry.

Membership Types

Producer Membership

CSI Producer Membership is open to any company primarily dedicated to the continuous production of architectural cast stone with a minimum of three years of operation. Certified Producer Members meet the industry's highest quality standards — verified through rigorous plant inspections, ongoing testing requirements, and recertification every two years.

Associate Membership

Associate Membership is open to firms and individuals who supply materials, equipment, or services that support the manufacture or installation of architectural cast stone. Associate members are invested in the future of the industry and play an important role in the CSI community.

Membership Application

Membership Benefits

Annual Convention

Connect with industry leaders, tour member plants, and stay ahead of what's happening in the field

Technical Resources

Bulletins, specifications, typical details, and the CSI Technical Manual

Industry Marketing

Your business promoted to architects and specifiers who specify CSI certified producers

Membership Education

Training and resources to help your team meet and maintain certification standards

Website Listing

Your company listed in the CSI Certified Producer Directory, used by architects, designers, and contractors across the country.

AIA Continuing Education

CSI-approved CEU seminars for architects and design professionals

Industry Advocacy

CSI actively promotes the use of cast stone and the value of certified producers to architects, specifiers, and owners nationwide

Membership Communication

Newsletters, updates, and direct access to staff and fellow members.

Technical Support

Access to experienced industry professionals who can help you navigate specifications, testing, and compliance questions