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: March 11, 2005


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


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