Companies

• Homasote Company

• Honeywell Commercial Roofing Systems

• Hopeman Correctional Systems

• Ideal Roofing Company Ltd.

• Industrial Acoustics Co.

• Industrial Building Panels-IBP, Inc.

• Ink Smith Inc.

• Innovative Metals Company, Inc. (IMETCO)

• Insulated Building Systems

• Insulated Panel Systems (IPS)

• Insulspan / Idaho, Inc.

• Insulspan Structural Insulated Panels

• Integris Metals

• International Paper

• Isopan Iberica, S.L.

• J. J. Barker Company Limited

• James Hardie Building Products, Inc.

• James River Steel

• John W. McDougall Co., Inc.

• Jordan Panel Systems Corp.

• Joyce Mfg. Co.

• K & I Contractors, Inc.

• K Ply

• Kacoroofing

• Kanalco Ltd.

• Kastner Metals / Embury