<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION DERIVED FROM FINANCIAL
STATEMENTS INCLUDED IN TREX COMPANY INC.'S QUARTERLY REPORT ON FORM 10-Q FOR THE
NINE MONTHS ENDED SEPTEMBER 30, 1999 AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                             312
<SECURITIES>                                         0
<RECEIVABLES>                                    4,256
<ALLOWANCES>                                         0
<INVENTORY>                                      3,155
<CURRENT-ASSETS>                                 8,128
<PP&E>                                          53,512
<DEPRECIATION>                                       0
<TOTAL-ASSETS>                                  70,311
<CURRENT-LIABILITIES>                            8,211
<BONDS>                                         10,887
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           141
<OTHER-SE>                                      48,223
<TOTAL-LIABILITY-AND-EQUITY>                    70,311
<SALES>                                         62,095
<TOTAL-REVENUES>                                62,095
<CGS>                                           27,554
<TOTAL-COSTS>                                   27,554
<OTHER-EXPENSES>                                14,855
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               1,331
<INCOME-PRETAX>                                 18,418
<INCOME-TAX>                                     6,674
<INCOME-CONTINUING>                             11,744
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                (1,056)
<CHANGES>                                            0
<NET-INCOME>                                    10,688
<EPS-BASIC>                                       0.85
<EPS-DILUTED>                                     0.85