UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP ( ) Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instructions 1(b). 1. Name and Address of Reporting Person Waibel, James J. 14643 Dallas Parkway Suite 1000 Dallas, TX 75254-8890 USA 2. Issuer Name and Ticker or Trading Symbol ElkCorp ELK 3. IRS or Social Security Number of Reporting Person (Voluntary) 4. Statement for Month/Year October 29, 2002 5. If Amendment, Date of Original (Month/Year) 6. Relationship of Reporting Person(s) to Issuer (Check all applicable) ( ) Director ( ) 10% Owner (X) Officer (give title below) ( ) Other (specify below) Senior Vice President - Administration 7. Individual or Joint/Group Filing (Check Applicable Line) (X) Form filed by One Reporting Person ( ) Form filed by More than One Reporting Person

Explanation of Responses: *Granted under the 1998 Amended and Restated Elcor Corporation Incentive Stock Option Plan. SIGNATURE OF REPORTING PERSON /s/ James J. Waibel DATE October 31, 2002

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