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PRESS RELEASE                                           TRADED:  NYSE
FOR IMMEDIATE RELEASE                                   SYMBOL:  ELK


FOR FURTHER INFORMATION:

Richard J. Rosebery                                     Harold R. Beattie, Jr.
Vice Chairman, Chief Financial                          Vice President, Finance
and Administrative Officer                              and Treasurer
(972) 851-0510                                          (972) 851-0523


               CYBERSHIELD SEES SALES AND EARNINGS FOR SECOND HALF
                      OF FISCAL 2001 BELOW EARLIER GUIDANCE

DALLAS, TEXAS, March 15, 2001 . . . . Elcor Corporation reported today that
fiscal year 2001 sales and earnings at its Cybershield unit will likely fall
short of previous guidance.

Richard J. Rosebery, Elcor's Vice Chairman, said, "Earlier guidance, based upon
then current production requirements, envisioned that fiscal year 2001 sales and
earnings of Cybershield would exceed the prior year by approximately one third,
as the scheduled ramp-up of new cellular handset components, and other new
products, was expected to provide significant sales and earnings momentum to the
third and fourth quarters of the year ending June 30, 2001.

"Recently, many of our telecom customers have significantly reduced their
production requirements in response to an excess accumulation of inventories in
distribution channels. This resulted from the recent slowdown in the wireless
telecommunication market. We expect that production requirements could remain
abnormally low for several months as distribution channel inventories are
reduced to a more appropriate level in relation to demand. While we still expect
a positive second half contribution from the production of new products, it is
likely that the incremental contribution of new products will be temporarily
offset by reduced production of all products. Looking ahead to the longer term,
we remain optimistic that Cybershield's unique "one stop" platform of multiple
shielding technologies, and related subassembly and decorative painting
services, will result in strong sales growth driven by continued customer
diversification, increasing sales content per unit, and a continued expansion of
Cybershield's service capabilities," he concluded.

Representing approximately 10% of Elcor's consolidated sales, Cybershield is the
Western Hemisphere's leading supplier of shielded plastic components to the
digital

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PRESS RELEASE
Elcor Corporation
March 15, 2001
Page 2



wireless cellular telephone industry, and an important supplier of
shielding solutions to the telecommunications infrastructure, computer, bar
coding and medical electronics industries. Cybershield and its subsidiaries
comprise Elcor's Electronics Manufacturing Services business segment.

SAFE HARBOR PROVISIONS
In accordance with the safe harbor provisions of the securities law regarding
forward-looking statements, in addition to the historical information contained
herein, the above discussion contains forward-looking statements that involve
risks and uncertainties. The statements that are not historical facts are
forward-looking statements within the meaning of the Private Securities
Litigation Reform Act of 1995. These statements usually are accompanied by words
such as "outlook," "believe," "estimate," "potential," "project," "expect,"
"anticipate," "plan," "predict," "could," "should," "may," or similar words that
convey the uncertainty of future events or outcomes. These statements are based
on judgments the company believes are reasonable; however, Elcor's actual
results could differ materially from those discussed here. Factors that could
cause or contribute to such differences could include, but are not limited to,
changes in demand, prices, raw material costs, transportation costs, changes in
economic conditions of the various markets the company serves, changes in the
amount and severity of inclement weather, as well as the other risks detailed
herein and in the company's reports filed with the Securities and Exchange
Commission, including but not limited to its Form 10-K for the fiscal year
ending June 30, 2000, and subsequent Forms 8-K and 10-Q.

                                 - - - - - - - -

Elcor, through its subsidiaries, manufactures roofing products and industrial
products, and provides electronics manufacturing services. Each of Elcor's
principal operating subsidiaries is the leader or one of the leaders within its
particular market. Its common stock is listed on the New York Stock Exchange
(ticker symbol: ELK).

Elcor's roofing products facilities are located in Tuscaloosa, Alabama; Shafter,
California; Myerstown, Pennsylvania; Dallas and Ennis, Texas. Its electronics
manufacturing services facilities are located in Canton, Georgia; Dallas and
Lufkin, Texas; and its industrial products facilities are located in Cleveland,
Ohio and Midland, Texas.