• Dawson Metal Company, Inc.

• EMA Consulting Structrual Engineers

• ERSystems

• Elastizell Corporation of America

• Euclid Chemical Company

• Fields Company LLC

• Florida Painting

• Flynn Canada Ltd.

• Foam Enterprises Inc.

• GAF

• GMX, Inc.

• GS Roofing Products.( CertainTeed Corporation)

• Galaxy Industries

• Gardner Asphalt Corp.

• Gardner-Gibson, Inc.

• Garland Canada Inc.

• Garland Co.

• Garon Products Inc.

• Honeywell Commercial Roofing Systems

• ICA

• Infinity Coatings International

• Ink Smith Inc.

• Innovative Formulations Inc.

• Innovative Metals Company, Inc. (IMETCO)

• International Diamond Systems

• JEV CAP Manufacturing