Exhibit (21) State or Other Jurisdiction Under the Laws of Subsidiaries of Owens Corning (2/28/97) Which Organized Barbcorp, Inc. Delaware Crown Manufacturing Inc. Canada Dansk-Svensk Glasfiber A/S Denmark Deutsche Owens-Corning Glasswool GmbH Germany Eric Company Delaware European Owens-Corning Fiberglas, S.A. Belgium Falcon Foam Corporation Delaware IPM, Inc. Delaware Kitsons Insulation Products Ltd. United Kingdom Knytex Company, LLC Delaware Lmp Impianti Srl Italy Matcorp, Inc. Delaware N.V. Owens-Corning S.A. Belgium OC Celfortec Inc. Canada O/C/FIRST CORPORATION Ohio OCFOGO, Inc. Delaware O.C. Funding B.V. The Netherlands O/C/SECOND CORPORATION Delaware OCW Acquisition Corporation (dba, Delsan) Delaware Owens-Corning A/S Norway Owens Corning Building Materials Espana S.A. Spain Owens-Corning Building Products (U.K.) Ltd. United Kingdom Owens Corning Canada Inc. Canada Owens-Corning Capital Holdings I, Inc. Delaware Owens-Corning Capital Holdings II, Inc. Delaware Owens-Corning Capital L.L.C. Delaware Owens Corning Cayman (China) Holdings Cayman Islands Owens-Corning Cayman Limited Cayman Islands Owens-Corning Changchun Guan Dao Company Ltd. PRC China Owens Corning Espana SA Spain Owens-Corning Fiberglas A.S. Limitada Brazil Owens-Corning Fiberglas Deutschland GmbH Germany Owens-Corning Fiberglas Espana, S.A. Spain Owens-Corning Fiberglas France S.A. France Owens-Corning Fiberglas (G.B.) Ltd. United Kingdom Owens-Corning Fiberglas (Italy) S.r.l. Italy Owens-Corning Fiberglas Norway A/S Norway Owens-Corning Fiberglas S.A. Uruguay Owens-Corning Fiberglas Sweden AB Sweden Owens-Corning Fiberglas Sweden Inc. Delaware Owens-Corning Fiberglas Technology Inc. Illinois Owens-Corning Fiberglas (U.K.) Ltd. United Kingdom Owens-Corning Finance (U.K.) plc United Kingdom Owens-Corning FSC, Inc. Barbados State or Other Jurisdiction Under the Laws of Subsidiaries of Owens Corning (2/28/97) Which Organized Owens-Corning Funding Corporation Delaware Owens-Corning (Guangzhou) Fiberglas Co., Ltd. PRC China Owens-Corning Holdings Limited Cayman Islands Owens Corning HT, Inc. Delaware Owens-Corning Isolation France S.A. France Owens Corning (Japan) Ltd. Japan Owens-Corning Ontario Holdings Inc. Canada Owens-Corning Overseas Holdings, Inc. Delaware Owens-Corning (Overseas) Management Limited Cyprus Owens Corning Pipe (Africa) Pvt. Ltd. Zimbabwe Owens Corning Polyfoam UK Ltd. United Kingdom Owens Corning Polypan SPA Italy Owens-Corning Real Estate Corporation Ohio Owens Corning (Shanghai) Fiberglas Co., Ltd. PRC China Owens Corning (Singapore) PTE Ltd. Singapore Owens Corning South Africa (Pty) Ltd. South Africa Owens-Corning Trading, Ltd. British Virgin Islands Owens-Corning (UK) Holdings Limited United Kingdom Owens-Corning Veil Netherlands B.V. The Netherlands Owens-Corning Veil U.K. Ltd. United Kingdom Palmetto Products, Inc. Delaware Scanglas Ltd. United Kingdom Soltech, Inc. Kentucky UC Industries, Inc. Delaware WD s.a. Belgium Western Fiberglass of Texas, Inc. Utah Willcorp, Inc. Delaware Wrexham A.R. Glass Ltd. United Kingdom