• Garland Canada Inc.

• Gemite Products Inc.

• Globe Building Materials

• Haag Engineering

• Hal Industries Inc.

• Harvey Building Products

• Honeywell Commercial Roofing Systems

• Hyload Roofing Systems

• ICA

• IKO

• ISG Resources, Inc.

• ISP Minerals Products, Inc.

• Iko Industries Ltd.

• International EPDM Rubber Roofing Systems, Inc.

• International Fibreboard

• Karnak Corporation

• Koch Materials Company

• Koppers Industries, Inc.

• Leatherback Industries

• Lime Crest Corp.

• Loadmaster Systems

• MacDermot Studio

• Malarkey Roofing Products

• Monsey Bakor Inc.

• Murray Sheet Metal Co.

• NEI Advanced Composite Technology (NEI, Inc.)