Exhibit 99.1

              ElkCorp Revises Outlook for its Fiscal Third Quarter

     DALLAS--(BUSINESS WIRE)--March 27, 2006--ElkCorp, (NYSE:ELK), announced a
revised earnings outlook for its third fiscal quarter of 2006. The company now
expects earnings per diluted share to be in the range of $0.40 to $0.43 compared
to the $0.50 to $0.53 per diluted share guidance given in ElkCorp's second
quarter earnings release dated January 19, 2006. The company is maintaining its
guidance for fiscal 2006 but anticipates results will now be at the lower end of
its previously announced range of $2.25 to $2.40 per diluted share. Elk plans to
further discuss its outlook for the fourth fiscal quarter as well as fiscal year
2006 when it reports its third quarter results following the close of the market
on April 25.
     The reduced earnings per diluted share estimate for the third quarter is
primarily attributed to slower than anticipated ramp-up of sales into the
Florida storm areas, higher asphalt and transportation costs and lower than
expected decking shipments in the composites business. These factors were
partially offset by record shingle shipments. Product expected to go into
Florida was shipped to the lower margin Gulf Coast storm areas which were
impacted by Hurricanes Rita and Katrina. Transportation and asphalt costs have
also continued to increase beyond the company's previous expectation of leveling
off in the quarter.
     "We continue to see strong shingle demand in the majority of the country,
however, due to the slower than anticipated ramp in the demand from Hurricane
Wilma we did not ship as much product as anticipated into the Florida market,"
said Thomas Karol, chairman and chief executive officer of ElkCorp. "We believe
that there is still substantial demand in these areas, but due to the longer
lead times for insurance claims settlement, this demand is at a much slower pace
than after previous storms. Additionally, asphalt prices and transportation
costs are higher than we had originally anticipated for the quarter. We have
announced a 7% to 9% price increase effective April 3rd that should help us to
offset these costs."
     Mr. Karol continued, "In our composites business, we did not see the
volumes in January and February that we had anticipated, which was largely due
to slower than anticipated inventory build at the dealer level. We believe that
dealers are somewhat reluctant to place large initial seasonal orders due to the
general industry overstocking experienced in the last season. We feel confident
that as the season progresses, dealers will begin to carry heavier inventory
loads. We are also launching programs that will help educate and promote
contractors to use our product, which we believe will assist us in building
confidence and brand recognition in the market going forward."
     "We are obviously never pleased when we do not meet our quarterly earnings
outlook but the long-term outlook for the company remains positive. Demand for
our roofing products remains strong. We have composite decking and railing
products that we believe are among the best in the market and we expect that as
decking volumes begin to pick up we will be able to attain more positive results
on a consistent basis. Our specialty fabric technologies business also continues
to grow and develop innovative high-margin products that will assist with
continued growth going forward."
     The company will release its fiscal third quarter results on Tuesday, April
25, following the close of the market. ElkCorp will also host a conference call
on April 26, 2006, at 11:00 a.m. EDT to further discuss its earnings and
operations for the third quarter as well as expectations for its fourth quarter
and fiscal year end. Investors and other interested parties may participate in
the live audio webcast by visiting the investor relations section of the ElkCorp
Web site at www.elkcorp.com.

     About ElkCorp

     ElkCorp, through its subsidiaries, manufactures Elk brand premium roofing
and building products (90% of consolidated revenue) and provides technologically
advanced products and services to other industries. Its common stock is listed
on the New York Stock Exchange (NYSE:ELK). See www.elkcorp.com for more
information.

     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 "optimistic," "vision," "outlook," "believe," "estimate," "potential,"
"forecast," "goal," "project," "expect," "anticipate," "plan," "predict,"
"could," "should," "may," "likely," or similar words that convey the uncertainty
of future events or outcomes and include the earnings outlook for the third
quarter and fiscal year 2006. These statements are based on judgments the
company believes are reasonable; however, ElkCorp'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, failure to achieve expected
efficiencies in new operations, changes in the amount and severity of inclement
weather, acts of God, war or terrorism, 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, 2005. ElkCorp undertakes no obligation to update or revise
publicly any forward-looking statements, whether as a result of new information,
future events or otherwise.


     CONTACT: ElkCorp
              Investor Relations Contact:
              Stephanie Elwood, 972-851-0472