• Cox Industries Inc.

• Cumberland Woodcraft Co.

• DuPont Tyvek Weatherization Systems

• Dura-Loc Roofing Systems Limited

• EMCO Building Products

• Echeguren Slate, Inc.

• Elk Corporation

• Elk Corporation

• Eternit, Inc.

• Evergreen Slate Company, LLC

• Flame Stop, Inc.

• Fraser Cedar, Canada

• Fraser Cedar, USA

• G-S Company

• Gerard Roofing Technologies

• Globe Building Materials

• Granville Manufacturing Company, Inc.

• Greenstone Slate Company

• Harvey Building Products

• Hilltop Slate Inc.

• IKO

• Iko Industries Ltd.

• Ink Smith Inc.

• International Slate

• James Hardie Building Products, Inc.

• Loadmaster Systems