EXHIBIT 32

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

Pursuant  to 18 U.S.C. Section 1350 as adopted pursuant to Section  906  of  the
Sarbanes-Oxley Act of 2002, each of the undersigned certifies that this periodic
report  fully  complies  with the requirements of Section  13(a)  or  15(d),  as
applicable,  of  the  Securities Exchange Act of 1934 and that  the  information
contained in this quarterly report on Form 10-Q fairly presents, in all material
respects,  the  financial  condition  and  results  of  operations  of  Spartech
Corporation.


                                        Date: June 3, 2004


                                        /s/ Bradley B. Buechler
                                        Bradley B. Buechler
                                        Chairman, President and Chief Executive
                                        Officer


                                        Randy C. Martin
                                        Randy C. Martin
                                        Executive Vice President - Corporate
                                        Development and Chief Financial Officer