About Us

The Cast Stone Institute® is an organization of Cast Stone Manufacturers, Associates, and Concrete Technologists formed for the purpose of improving the quality of Cast Stone and disseminating information regarding its use. The activities of the Institute are designed to benefit both the industry and its patrons.

The Institute solicits the cooperation of Architects and users of Cast Stone. It invites requests for information and assistance in matters involving Cast Stone. For further information, contact the Cast Stone Institute®

Our Vision

  • Establish the Cast Stone Institute's position as the authority and voice of the cast stone industry.
  • Encourage through research, development and member training; continual improvement of cast stone's unique characteristics that make it a premium building material.
  • Educate designers and users of cast stone of the inherent value, quality and best practices in the use of cast stone.
  • Increase the awareness, value and market share of cast stone relative to alternate building products.

Specific Objectives

  • To foster, promote and encourage the adoption of the standards and specification of the Institute by national, state and local government agencies to be used as reference standards for the manufacture, delivery and installation of cast stone.
  • To establish standards of quality control applicable to the manufacture of Cast Stone, and to maintain such standards by inspection, testing, or other means to insure products of the highest standard of quality.
  • To foster and promote the interests of persons, firms, groups, corporations, associations, and others who are engaged in any phase of the construction industry in which cast stone may be used.

Find a Producer Member

What makes a Cast Stone Institute member different?

Producer members (manufacturers) must pass a rigorous 86-step plant certification.

  • Product Quality Control ( Compressive Strength and Absorption )
  • Safety (OSHA Compliant)
  • Product Consistency (Checked for Dimension, Color, Texture, and Tolerances)
  • Recordkeeping
  • Housekeeping
  • Recertification every two years to insure producers maintain high standards set by the Institute.

What is Cast Stone?

Cast Stone is defined as “a refined architectural concrete building unit manufactured to simulate natural cut stone, used in unit masonry applications as per ASTM C1364.” Cast Stone is a masonry product, used as an architectural feature, trim, ornament or facing for buildings or other structures. Cast Stone can be made from white and/or grey cements, manufactured or natural sands, carefully selected crushed stone or well graded natural gravels and mineral coloring pigments to achieve the desired color and appearance while maintaining durable physical properties which exceed most natural cut building stones. Cast Stone is an excellent replacement for natural cut limestone, brownstone, sandstone, bluestone, granite, slate, keystone, travertine and other natural building stones.