Exhibit 32 CERTIFICATIONS 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 filing of the Quarterly Report of Headwaters Incorporated (the "Company") on Form 10-Q for the period ended June 30, 2003 (the "Report"), we, Kirk A. Benson, Chief Executive Officer of the Company, and Steven G. Stewart, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. ss. 1350, as adopted pursuant to ss. 906 of the Sarbanes-Oxley Act of 2002, that: (i) The Report fully complies with the requirements of section 13(a) of the Securities Exchange Act of 1934; and (ii) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. /s/ Kirk A. Benson - -------------------------- Kirk A. Benson Chief Executive Officer August 8, 2003 /s/ Steven G. Stewart - ------------------------- Steven G. Stewart Chief Financial Officer August 8, 2003 A signed original of this written statement required by Section 906 has been provided to Headwaters and will be retained by Headwaters and furnished to the Securities and Exchange Commission or its staff upon request.