Exhibit 99.1



    Written Statement of Chief Executive Officer and Chief Financial Officer

                             Pursuant to Section 906

           of the Sarbanes-Oxley Act of 2002 (18 U.S.C. Section 1350)


     The undersigned, the President and the Executive Vice President and Chief
Financial Officer of Trex Company, Inc. (the "Company"), each hereby certifies
that, on the date hereof:

     (a)  the Quarterly Report on Form 10-Q of the Company for the Period Ended
          June 30, 2002 filed on the date hereof with the Securities and
          Exchange Commission (the "Report") fully complies with the
          requirements of Section 13(a) or 15(d) of the Securities Exchange Act
          of 1934; and

     (b)  information contained in the Report fairly presents, in all material
          respects, the financial condition and results of operations of the
          Company.



                                       /s/ Robert G. Matheny
                                       -----------------------------------
                                       Robert G. Matheny
                                       President
                                       August 14, 2002


                                       /s/ Anthony J. Cavanna
                                       ------------------------------------
                                       Anthony J. Cavanna
                                       Executive Vice President and Chief
                                         Financial Officer
                                       August 14, 2002