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Exhibit 99.1

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 Southwall Technologies Inc. (the "Company") on Form 10-Q for the period ending March 30, 2003, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Thomas G. Hood, the Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant § 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)   The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/  THOMAS G. HOOD Thomas G. Hood
Chief Executive Officer
May 14, 2003

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Exhibit 99.1

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