UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549

                                    FORM 8-K

                                 CURRENT REPORT
     Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934

         Date of Report (Date of earliest event reported) April 26, 2004
                                                         -----------------------

                           GIBRALTAR STEEL CORPORATION
             ------------------------------------------------------
             (Exact name of registrant as specified in its chapter)


         Delaware                        0-22462                16-1445150
- ----------------------------      ---------------------   ----------------------
(State or other jurisdiction           (Commission             (IRS Employer
     of incorporation)                 File Number)          Identification No.)

               3556 Lake Shore Road
                  P.O. Box 2028
                Buffalo, New York                              14219-0228
                -----------------                              ----------
     (Address of principal executive offices)                  (Zip Code)


        Registrant's telephone number, including area code (716) 826-6500
                                                          ----------------------


        ------------------------------------------------------------------
          (Former name or former address, if changed since last report)

Item 7. Financial Statements, Pro Forma Financial Information and Exhibits. (a) Financial Statements of Businesses Acquired. No financial statements are required to be filed under applicable rules. (b) Pro Forma Financial Information. No pro forma financial information is required under applicable rules. (c) Exhibits. 99.1 Press Release of the Company dated April 26, 2004. Item 9. Regulation FD Disclosure The following information is being provided under Item 12: On April 26, 2004, Gibraltar Steel Corporation issued a press release announcing operating results for the first quarter ended March 31, 2004. The information contained in the press release dated April 26, 2004, is incorporated herein by reference and attached as exhibit 99.1 herein. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this Report to be signed on its behalf by the undersigned hereunto duly authorized. Dated: April 26, 2004 GIBRALTAR STEEL CORPORATION /S/ David W. Kay ------------------------------------ Name: David W. Kay Title: Chief Financial Officer

EXHIBIT INDEX 99.1 Press Release of the Company dated April 26, 2004

                                                                    Exhibit 99.1


           Gibraltar Reports Best-Ever Quarterly Sales and Earnings;
                  First-Quarter Sales of $212 Million Up 31 %,
                    Net Income Grew by 91 % to $9.3 Million

   BUFFALO, N.Y.--(BUSINESS WIRE)--April 26, 2004--Gibraltar (Nasdaq:
ROCK) today reported its highest-ever quarterly sales and earnings for
the quarter ended March 31, 2004. As it had previously disclosed on
April 15, the Company said that while the recent surge in steel
pricing had a positive impact on its first-quarter performance, the
faster-than-anticipated ramp-up of the national sales and marketing
effort in its building products operations, combined with a continuing
focus on operational improvements and a strengthening economy, all
contributed to the stronger-than-expected results.
   Sales of $212 million in the first quarter of 2004 were a
quarterly record, increasing by approximately 31 percent from $161
million in the first quarter of 2003. Net income of $9.3 million in
the quarter ended March 31, 2004, was also a quarterly record, and
increased by approximately 91 percent from $4.9 million in the first
quarter of 2003.
   Earnings per share in the first quarter of 2004 were $.48, at the
upper end of the range Gibraltar provided on April 15, and increased
by approximately 60 percent compared to $.30 per share in the first
quarter of 2003, on approximately 21 percent more weighted average
shares outstanding which resulted from Gibraltar's successful
completion of its approximately 3.2 million-share secondary stock
offering.
   "We had our best-ever quarterly sales and earnings in the first
quarter, as most of our segments generated double-digit sales growth,
as well as significant improvements in operating income. The many
steps we have taken to strategically strengthen and reposition
Gibraltar - including our 2003 acquisitions of Construction Metals
(April 1) and Air Vent (May 1), our newly formed joint venture with
Duferco Farrell, and our new heat-treating agreements with major
automotive customers - put us in a position where we were able to
produce a first-quarter performance that significantly exceeded our
expectations and set us on a course that is leading towards generating
record results in 2004," said Brian J. Lipke, Gibraltar's Chairman and
Chief Executive Officer.
   "As we look at our portfolio of businesses, we had exceptionally
strong performances in a number of targeted high-growth areas,
including structural connectors, ventilation products, and
metal-joining and assembly services, to name a few. These are among
our historically best-performing businesses, with the highest margins
and profitability," said Mr. Lipke.
   "While we have begun this year with excellent momentum, we
continue to have a number of initiatives underway and others in the
planning stages that should lead to continuing improvements in our
performance.
   "We are also continuing our efforts to increase sales through the
utilization of existing capacity in our company and enhancing the
profitability of our existing operations through the development of
improved operating synergies, complemented by strategic acquisitions,
joint ventures, and other business partnerships that strengthen our
company.
   "In the first three months of 2004, we have made Gibraltar a much
stronger company with the addition of Bob Sadler (Chairman of M&T Bank
and Executive Vice President of M&T Bank Corporation, NYSE: MTB) to
our board, Dave Kay joining our management team as Chief Financial
Officer, the acquisitions of Renown and Covert (both of which
strengthened our position as the second-largest manufacturer of
structural connectors in North America), and a series of continuing
initiatives to streamline and integrate the operations in every part
of our company," said Mr. Lipke.
   As we move into the seasonally strongest periods for our business
(the second and third quarters), we will continue to benefit from all
of our growth initiatives, even though the second-quarter growth, on a
comparative basis, is expected to occur at a more moderate pace than
the first quarter.
   Looking ahead, Mr. Lipke said that, barring a significant change
in business conditions, Gibraltar expects its second-quarter earnings
per share will be in the range of $.56 to $.61, compared to $.51 in
the second quarter of 2003, on approximately 21 percent more weighted
average shares outstanding (19.6 million versus 16.1 million).
   "We have now generated quarter-over-quarter improvements in both
sales and earnings for nine consecutive quarters, and we believe we
are well positioned to build on this record of consistent and steadily
improving performance in the second quarter. We are clearly focused on
generating consistent improvements to our sales, earnings, margins,
and returns on sales and investment," said Mr. Lipke.
   Gibraltar is a manufacturer and distributor of more than 5,000
residential and commercial building products, one of North America's
leading metal processors, and North America's second-largest
commercial heat treater. The Company serves approximately 10,000
customers in a variety of industries in all 50 states, Canada, and
Mexico. It has approximately 3,600 employees and operates 70
facilities in 26 states, Canada, and Mexico.
   Information contained in this release, other than historical
information, should be considered forward-looking, and may be subject
to a number of risk factors, including: the impact of changing steel
prices on the Company's results of operations; changing demand for the
Company's products; risks associated with the integration of
acquisitions; and changes in interest or tax rates.
   Gibraltar will review its first-quarter results and discuss its
outlook for the second quarter during its quarterly conference call,
which will be held at 11 a.m. Eastern Time (please note new time) on
April 27. Details of the call can be found on Gibraltar's Web site, at
www.gibraltar1.com.
   CONTACT: Kenneth P. Houseknecht, Vice President of Communications
and Investor Relations, at 716/826-6500, khouseknecht@gibraltar1.com.
   Gibraltar's news releases, along with comprehensive information
about the Company, are available on the Internet, at
www.gibraltar1.com.


                     GIBRALTAR STEEL CORPORATION
                         Financial Highlights
                (in thousands, except per share data)


                                               Three Months Ended
                                        March 31, 2004  March 31, 2003
                                        --------------  --------------
Net Sales                                 $   211,995    $   161,532
Net Income                                $     9,345    $     4,904
Net Income Per Share-Basic                $       .48    $       .31
Weighted Average Shares Outstanding-
 Basic                                         19,423         15,988
Net Income Per Share-Diluted              $       .48    $       .30
Weighted Average Shares Outstanding-
 Diluted                                       19,572         16,151




                            GIBRALTAR STEEL CORPORATION

                       CONDENSED CONSOLIDATED BALANCE SHEETS
                                   (in thousands)

                                           March 31,     December 31,
                                             2004           2003
                                          -----------    -----------
                                          (unaudited)     (audited)
Assets
- ------
Current assets:
 Cash and cash equivalents                $     5,424    $    29,019
 Accounts receivable                          135,297        102,591
 Inventories                                  112,533        107,531
 Other current assets                          11,887         10,309
                                          -----------    -----------
   Total current assets                       265,141        249,450

Property, plant and equipment, net            250,349        250,029
Goodwill                                      270,917        267,157
Investments in partnerships                     5,568          5,044
Other assets                                    6,710          6,063
                                          -----------    -----------
                                          $   798,685    $   777,743
                                          ===========    ===========

Liabilities and Shareholders' Equity
- ------------------------------------
Current liabilities:
 Accounts payable                         $    58,791    $    49,879
 Accrued expenses                              30,829         29,029
 Current maturities of long-term debt          18,348         19,848
                                          -----------    -----------
   Total current liabilities                  107,968         98,756

Long-term debt                                217,395        222,402
Deferred income taxes                          57,799         55,982
Other non-current liabilities                   6,086          6,422
Shareholders' equity:
  Preferred stock, $.01 par value;
   authorized: 10,000,000 shares; none
   outstanding                                      -              -
  Common stock, $.01 par value; authorized
   50,000,000 shares; issued 19,591,683
   and 19,274,069 shares in 2004 and 2003,
   respectively                                   196            193
  Additional paid-in capital                  205,737        199,206
  Retained earnings                           204,602        196,138
  Unearned compensation                          (687)          (818)
  Accumulated other comprehensive loss           (411)          (538)
                                          -----------    -----------
                                              409,437        394,181

Less: cost of 27,000 and 19,000 common
 shares held in treasury in 2004 and 2003,
 respectively                                       -              -
                                          -----------    -----------
  Total shareholders' equity                  409,437        394,181
                                          -----------    -----------
                                          $   798,685    $   777,743
                                          ===========    ===========


                     GIBRALTAR STEEL CORPORATION

             CONDENSED CONSOLIDATED STATEMENTS OF INCOME
                (in thousands, except per share data)

                                              Three Months Ended
                                                    March 31,
                                              2004           2003
                                          -----------    -----------
                                          (unaudited)    (unaudited)

 Net sales                                $   211,995    $   161,532

 Cost of sales                                169,235        132,457
                                          -----------    -----------

  Gross profit                                 42,760         29,075

 Selling, general and administrative
  expense                                      24,551         18,433
                                          -----------    -----------

  Income from operations                       18,209         10,642

Other (income) expense:
 Equity in partnerships' income                  (540)           (71)
 Interest expense                               3,303          2,540
                                          -----------    -----------
   Total other expense                          2,763          2,469
                                          -----------    -----------

   Income before taxes                         15,446          8,173

Provision for income taxes                      6,101          3,269
                                          -----------    -----------

   Net income                             $     9,345    $     4,904
                                          ===========    ===========

Net income per share - Basic              $       .48    $       .31
                                          ===========    ===========

Weighted average shares outstanding -
 Basic                                         19,423         15,988
                                          ===========    ===========

Net income per share - Diluted            $       .48    $       .30
                                          ===========    ===========

Weighted average shares outstanding -
 Diluted                                       19,572         16,151
                                          ===========    ===========



                     GIBRALTAR STEEL CORPORATION

           CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                            (in thousands)

                                               Three Months Ended
                                                   March 31,
                                             2004            2003
                                          -----------    -----------
                                          (unaudited)    (unaudited)

Cash flows from operating activities
- ------------------------------------
Net income                                $     9,345    $     4,904
Adjustments to reconcile net income to
 net cash used in operating activities:
Depreciation and amortization                   5,959          5,295
Provision for deferred income taxes             1,113            773
Equity in partnerships' income                   (540)           (71)
Distributions from partnerships                    16             21
Unearned compensation, net of restricted
 stock forfeitures                                  7             78
Other noncash adjustments                         (27)            89
Increase (decrease) in cash resulting from
 changes in (net of acquisitions):
  Accounts receivable                         (31,264)        (9,722)
  Inventories                                  (3,348)        (7,310)
  Other current assets                           (938)        (2,503)
  Accounts payable and accrued expenses         9,926         (1,904)
  Other assets                                   (397)            39
                                          -----------    -----------

   Net cash used in operating activities      (10,148)       (10,311)
                                          -----------    -----------

Cash flows from investing activities
- ------------------------------------
Acquisitions, net of cash acquired             (7,135)             -
Purchases of property, plant and equipment     (5,456)        (4,843)
Net proceeds from sale of property and
 equipment                                        296            225
                                          -----------    -----------

   Net cash used in investing activities      (12,295)        (4,618)
                                          -----------    -----------

Cash flows from financing activities
- ------------------------------------
Long-term debt reduction                       (9,659)        (2,047)
Proceeds from long-term debt                    2,656         18,312
Net proceeds from issuance of common stock      6,720            259
Payment of dividends                             (869)          (640)
                                          -----------    -----------

   Net cash (used in) provided by
    financing activities                       (1,152)        15,884
                                          -----------    -----------

   Net (decrease) increase in cash and
    cash equivalents                          (23,595)           955

Cash and cash equivalents at beginning of
 year                                          29,019          3,662
                                          -----------    -----------

Cash and cash equivalents at end of
 period                                   $     5,424    $     4,617
                                          ===========    ===========



                      GIBRALTAR STEEL CORPORATION
                          Segment Information
                            (in thousands)

                                 Three Months Ended March 31,
                                 ----------------------------
                                                   Increase (Decrease)
                           2004         2003          $         %
                        ----------   ----------   ---------- ---------
                        (unaudited)  (unaudited)

Net Sales
 Processed steel        $   77,166   $   71,203   $    5,963     8.4%
 Building products         109,323       68,295       41,028    60.1%
 Heat treating              25,506       22,034        3,472    15.8%
                        ----------   ----------   ----------

Total Sales                211,995      161,532       50,463    31.2%


Income from Operations
 Processed steel        $    8,027   $    8,282   $     (255)   -3.1%
 Building products          10,791        2,530        8,261   326.5%
 Heat treating               3,948        2,963          985    33.2%
 Corporate                  (4,557)      (3,133)      (1,424)  -45.5%
                        ----------   ----------   ----------

Total Operating Income      18,209       10,642        7,567    71.1%


Operating Margin
 Processed steel              10.4%        11.6%
 Building products             9.9%         3.7%
 Heat treating                15.5%        13.4%


    CONTACT: Gibraltar
             Kenneth P. Houseknecht, 716-826-6500
             khouseknecht@gibraltar1.com.