    <SEC-DOCUMENT>0001193125-23-075313-index.html : 20230321
    <SEC-HEADER>0001193125-23-075313.hdr.sgml : 20230321
    <ACCEPTANCE-DATETIME>20230321084653
    ACCESSION NUMBER:		0001193125-23-075313
    CONFORMED SUBMISSION TYPE:	ARS
    PUBLIC DOCUMENT COUNT:		1
    CONFORMED PERIOD OF REPORT:	20221231
    FILED AS OF DATE:		20230321
    DATE AS OF CHANGE:		20230321
    EFFECTIVENESS DATE:		20230321

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			TREX CO INC
    		CENTRAL INDEX KEY:			0001069878
    		STANDARD INDUSTRIAL CLASSIFICATION:	LUMBER & WOOD PRODUCTS (NO FURNITURE) [2400]
    		IRS NUMBER:				541910453
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		ARS
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-14649
    		FILM NUMBER:		23747928

    	BUSINESS ADDRESS:
    		STREET 1:		160 EXETER DRIVE
    		CITY:			WINCHESTER
    		STATE:			VA
    		ZIP:			22603-8605
    		BUSINESS PHONE:		5405426300

    	MAIL ADDRESS:
    		STREET 1:		160 EXETER DRIVE
    		CITY:			WINCHESTER
    		STATE:			VA
    		ZIP:			22603-8605
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>ARS
    <SEQUENCE>1
    <FILENAME>d426102dars.pdf
    <DESCRIPTION>ARS
    <TEXT>
    Document 1 - file: d426102dars.pdf

    </DOCUMENT>
    </SEC-DOCUMENT>