Exhibit (99)
                                                                    ------------

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Owens Corning (the "Company") on Form
10-Q for the  quarterly  period  ended  September  30,  2002 as  filed  with the
Securities and Exchange Commission on the date hereof (the "Report"), I, Michael
H.  Thaman,  Chief  Financial  Officer of the Company,  certify,  pursuant to 18
U.S.C.  section 1350, as adopted  pursuant to section 906 of the  Sarbanes-Oxley
Act of 2002, that to the best of my knowledge:

(1)  The Report fully complies with the  requirements  of section 13(a) or 15(d)
     of the Securities Exchange Act of 1934; and

(2)  Information  contained  in the  Report  fairly  presents,  in all  material
     respects, the financial condition and results of operations of the Company.





/s/ Michael H. Thaman
Chief Financial Officer

October 28, 2002




This  certification  accompanies  the  Report  pursuant  to  Section  906 of the
Sarbanes-Oxley  Act of 2002 and shall not,  except to the extent required by the
Sarbanes-Oxley  Act of 2002,  be deemed  filed by the  Company  for  purposes of
Section 18 of the Securities Exchange Act of 1934, as amended.