EXHIBIT 32.1






                                  CERTIFICATION


                  Pursuant to 18 U.S.C. Section 1350, the undersigned officer of
RPM International Inc., a Delaware corporation (the "Company"), does hereby
certify, to such officer's knowledge, that the Company's Annual Report on Form
10-K for the year ended May 31, 2004 (the "Form 10-K") 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 the Form 10-K fairly
presents, in all material respects, the financial condition and results of
operations of the Company as of, and for, the periods presented in the Form
10-K.



Dated:  August 16, 2004                /s/ Robert L. Matejka
                                       ----------------------------
                                       Robert L. Matejka
                                       Vice President, Chief Financial Officer
                                       and Controller



         The foregoing Certification is being furnished solely pursuant to 18
U.S.C. Section 1350 and is not being filed as part of the Form 10-K or as a
separate disclosure document.