• Granville Manufacturing Company, Inc.

• Greenstone Slate Company

• Harvey Building Products

• Headwaters Incorporated

• Hilltop Slate Inc.

• IKO

• Iko Industries Ltd.

• Ink Smith Inc.

• International Slate

• James Hardie Building Products, Inc.

• Kacoroofing

• Loadmaster Systems

• MELLCO

• Maibec Industries, Inc.

• Malarkey Roofing Products

• Masonite International Corporation

• Masonite U.S. Holdings, Inc.

• Maxitile, Inc.

• Meeker Cedar Products Ltd.

• Met-Tile

• MetalWorks

• Mullane: M.J. Mullane Co.

• North Country Slate

• Overly Manufacturing Co., Inc.

• Owen Marble Shop, Inc.

• PABCO Roofing Products