We are MACS


In recognition of the influence codes and standards can have on the use of masonry materials, the Masonry Alliance for Codes and Standards (MACS) a coalition of masonry organizations representing national, state, and regional producer associations, material suppliers, mason contractor organizations, and organized labor promotional groups was established in 1995 to represent the interests of the masonry industry within various design and construction forums.




Find out about our organization, mission, and the results of our decades of advocacy.

Learn More →

Upcoming Events

Ready to take the next step? You can become a contributor or participate yourself.

Find Out How →


Organizational Members

Arizona Masonry Guild Inc.
MACS Representative: Ed Freyermuth
MACS Alternate: Lisa Prichard
MACS Alternate: Canan D’Avela

Brick Industry Association
MACS Representative: Chip Clark
MACS Alternate: Les Seaton
MACS Alternate: John Swink
Canadian Concrete Masonry Producers Association
MACS Representative: Paul Hargest
MACS Alternate: Marina DeSouza

Cast Stone Institute
MACS Representative: Jan Boyer

Clay Flue Lining Institute
MACS Representative: Robert A. Rucker
MACS Alternate: Jim Buckley

Concrete Masonry Association of CA & NV
MACS Representative: Kurt Siggard

Expanded Shale Clay and Slate Institute
MACS Representative: John P. Ries
MACS Alternate: Jeff Speck
MACS Alternate: Michael Robinson

International Masonry Institute
MACS Representative: Diane Throop

Mason Contractors Association of America
MACS Representative: Jeff Buczkiewicz

Masonry Association of Florida
MACS Representative: Don Beers
MACS Alternate: Dave Pfeffer
MACS Alternate: Joe Belcher

Masonry Heater Association
MACS Representative: Jerry Frisch

Masonry Institute of America
MACS Representative: John Chrysler

Masonry Institute of Iowa
MACS Representative: 

Masonry Institute of St. Louis
MACS Representative: Darrell McMillian

Masonry Veneer Manufacturers Association - National Concrete and Masonry Association
MACS Representative: Jason Thompson

National Concrete Masonry Association
MACS Representative: Nick Lang
MACS Alternate: Jason Thompson
National Lime Association
MACS Representative: Michael J. Tate
MACS Alternate: Margaret Thomson

New England Concrete Manufacturers Association
MACS Representative: David Dimmick

North Carolina Masonry Contractors Association
MACS Representative: Lynn Nash

Northwest Concrete Masonry Association
MACS Representative: Thomas Young

Pennsylvania Concrete Masonry Association
MACS Representative: Phil DeVecchis
MACS Alternate: Jan Boyer
MACS Alternate: Jack Kennedy

Portland Cement Association
MACS Representative: Stephen Szoke
MACS Alternate: Jay Hall
MACS Alternate: Mark Nard

Southeast Concrete Masonry Association
MACS Representative: Byard Stevens
MACS Alternate: Michael Robinson

Texas Masonry Council
MACS Representative: Lindsey Geeslin

Utah Masonry Council
MACS Representative: Brent Overson

Western States Clay Products Association
MACS Representative: Jeff Elder
MACS Alternate: Larry Rasmussen