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 Valhi,  Inc. (the "Company") on Form
10-Q for the  period  ended  June  30,  2002 as filed  with the  Securities  and
Exchange  Commission  on the date hereof (the  "Report"),  I, Steven L.  Watson,
President and Chief Executive  Officer of the Company,  certify,  pursuant to 18
U.S.C.  Section 1350, as adopted  pursuant to Section 906 of the  Sarbanes-Oxley
Act of 2002, that:

          (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 result of  operations of the
Company.



/s/  Steven L. Watson

Steven L. Watson
President and Chief Executive Officer
August 13, 2002