-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 qdmb0gkgoNkyr1OligD1oA==

<SEC-DOCUMENT>0001219870-03-000139.txt : 20030619
<SEC-HEADER>0001219870-03-000139.hdr.sgml : 20030619
<ACCEPTANCE-DATETIME>20030619111721
ACCESSION NUMBER:		0001219870-03-000139
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030618
FILED AS OF DATE:		20030619

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			LIPKE ERIC R
		CENTRAL INDEX KEY:			0000942079

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-22462
		FILM NUMBER:		03749732

	BUSINESS ADDRESS:	
		STREET 1:		3556 LAKE SHORE RD
		STREET 2:		P O BOX 2028
		CITY:			BUFFALO
		STATE:			NY
		ZIP:			14219-0228

	MAIL ADDRESS:	
		STREET 1:		75 EIMVIEW AVENUE
		CITY:			HAMBURG
		STATE:			NY
		ZIP:			14075

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GIBRALTAR STEEL CORP
		CENTRAL INDEX KEY:			0000912562
		STANDARD INDUSTRIAL CLASSIFICATION:	STEEL WORKS, BLAST FURNACES & ROLLING & FINISHING MILLS [3310]
		IRS NUMBER:				161445150
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		3556 LAKE SHORE ROAD
		STREET 2:		P O BOX 2028
		CITY:			BUFFALO
		STATE:			NY
		ZIP:			14219-0228
		BUSINESS PHONE:		7168266500

	MAIL ADDRESS:	
		STREET 1:		GATEWAY EXECUTIVE PARK
		STREET 2:		3556 LAKE SHORE ROAD PO BOX 2028
		CITY:			BUFFALO
		STATE:			NY
		ZIP:			14219-0228
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>

<ownershipDocument>

    <documentType>4</documentType>

    <periodOfReport>2003-06-18</periodOfReport>


    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000912562</issuerCik>
        <issuerName>GIBRALTAR STEEL CORP</issuerName>
        <issuerTradingSymbol>Rock</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000942079</rptOwnerCik>
            <rptOwnerName>LIPKE ERIC R</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>  </rptOwnerStreet1>
            <rptOwnerStreet2>  </rptOwnerStreet2>
            <rptOwnerCity>  </rptOwnerCity>
            <rptOwnerState>  </rptOwnerState>
            <rptOwnerZipCode>  </rptOwnerZipCode>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Vice President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeSecurity>
        <securityTitle>
            <value>Common stock</value>
        </securityTitle>
        <transactionDate>
            <value>2003-06-18</value>
        </transactionDate>
        <transactionCoding>
            <transactionFormType>4</transactionFormType>
            <transactionCode>J</transactionCode>
            <equitySwapInvolved>0</equitySwapInvolved>
            <footnoteId id="F1"/>
        </transactionCoding>
        <transactionTimeliness>
            <value></value>
        </transactionTimeliness>
        <transactionAmounts>
            <transactionShares>
                <value>3000</value>
            </transactionShares>
            <transactionValue>
                <value>20.1167</value>
            </transactionValue>
            <transactionAcquiredDisposedCode>
                <value>D</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <postTransactionAmounts>
            <sharesOwnedFollowingTransaction>
                <value>883002</value>
                <footnoteId id="F5"/>
                <footnoteId id="F6"/>
                <footnoteId id="F7"/>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>I</value>
            </directOrIndirectOwnership>
            <natureOfOwnership>
                <value>By Trust</value>
                <footnoteId id="F2"/>
            </natureOfOwnership>
        </ownershipNature>
    </nonDerivativeSecurity>

    <nonDerivativeSecurity>
        <securityTitle>
            <value>Common stock</value>
        </securityTitle>
        <transactionDate>
            <value>2003-06-18</value>
        </transactionDate>
        <transactionCoding>
            <transactionFormType>4</transactionFormType>
            <transactionCode>J</transactionCode>
            <equitySwapInvolved>0</equitySwapInvolved>
            <footnoteId id="F1"/>
        </transactionCoding>
        <transactionTimeliness>
            <value></value>
        </transactionTimeliness>
        <transactionAmounts>
            <transactionShares>
                <value>3000</value>
            </transactionShares>
            <transactionValue>
                <value>20.1167</value>
            </transactionValue>
            <transactionAcquiredDisposedCode>
                <value>D</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <postTransactionAmounts>
            <sharesOwnedFollowingTransaction>
                <value>860501</value>
                <footnoteId id="F8"/>
                <footnoteId id="F9"/>
                <footnoteId id="F10"/>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>I</value>
            </directOrIndirectOwnership>
            <natureOfOwnership>
                <value>By Trust</value>
                <footnoteId id="F3"/>
            </natureOfOwnership>
        </ownershipNature>
    </nonDerivativeSecurity>

    <nonDerivativeSecurity>
        <securityTitle>
            <value>Common stock</value>
        </securityTitle>
        <transactionDate>
            <value>2003-06-18</value>
        </transactionDate>
        <transactionCoding>
            <transactionFormType>4</transactionFormType>
            <transactionCode>J</transactionCode>
            <equitySwapInvolved>0</equitySwapInvolved>
            <footnoteId id="F1"/>
        </transactionCoding>
        <transactionTimeliness>
            <value></value>
        </transactionTimeliness>
        <transactionAmounts>
            <transactionShares>
                <value>594</value>
            </transactionShares>
            <transactionValue>
                <value>20.1167</value>
            </transactionValue>
            <transactionAcquiredDisposedCode>
                <value>D</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <postTransactionAmounts>
            <sharesOwnedFollowingTransaction>
                <value>128039</value>
                <footnoteId id="F11"/>
                <footnoteId id="F12"/>
                <footnoteId id="F13"/>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>I</value>
            </directOrIndirectOwnership>
            <natureOfOwnership>
                <value>Rush Creek Investment Co., LP</value>
                <footnoteId id="F4"/>
            </natureOfOwnership>
        </ownershipNature>
    </nonDerivativeSecurity>

    <derivativeSecurity>
        <securityTitle>
            <value>Option to buy</value>
        </securityTitle>
        <conversionOrExercisePrice>
            <value>10</value>
        </conversionOrExercisePrice>
        <transactionDate>
            <value>1988-08-08</value>
            <footnoteId id="F14"/>
        </transactionDate>
        <transactionCoding>
            <transactionFormType>4</transactionFormType>
            <transactionCode>J</transactionCode>
            <equitySwapInvolved>0</equitySwapInvolved>
        </transactionCoding>
        <transactionTimeliness>
            <value></value>
        </transactionTimeliness>
        <transactionAmounts>
            <transactionShares>
                <value>0</value>
            </transactionShares>
            <transactionValue>
                <value>0</value>
            </transactionValue>
            <transactionAcquiredDisposedCode>
                <value>A</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <exerciseDate>
            <value>1995-11-01</value>
        </exerciseDate>
        <expirationDate>
            <value>2004-10-31</value>
        </expirationDate>
        <underlyingSecurity>
            <underlyingSecurityTitle>
                <value>Common stock</value>
            </underlyingSecurityTitle>
            <underlyingSecurityShares>
                <value>0</value>
            </underlyingSecurityShares>
        </underlyingSecurity>
        <postTransactionAmounts>
            <sharesOwnedFollowingTransaction>
                <value>10000</value>
                <footnoteId id="F15"/>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </derivativeSecurity>

    <derivativeSecurity>
        <securityTitle>
            <value>Option to buy</value>
        </securityTitle>
        <conversionOrExercisePrice>
            <value>21.75</value>
        </conversionOrExercisePrice>
        <transactionDate>
            <value>1988-08-08</value>
            <footnoteId id="F14"/>
        </transactionDate>
        <transactionCoding>
            <transactionFormType>4</transactionFormType>
            <transactionCode>J</transactionCode>
            <equitySwapInvolved>0</equitySwapInvolved>
        </transactionCoding>
        <transactionTimeliness>
            <value></value>
        </transactionTimeliness>
        <transactionAmounts>
            <transactionShares>
                <value>0</value>
            </transactionShares>
            <transactionValue>
                <value>0</value>
            </transactionValue>
            <transactionAcquiredDisposedCode>
                <value>A</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <exerciseDate>
            <value>1998-07-08</value>
        </exerciseDate>
        <expirationDate>
            <value>2007-07-08</value>
        </expirationDate>
        <underlyingSecurity>
            <underlyingSecurityTitle>
                <value>Common stock</value>
            </underlyingSecurityTitle>
            <underlyingSecurityShares>
                <value>0</value>
            </underlyingSecurityShares>
        </underlyingSecurity>
        <postTransactionAmounts>
            <sharesOwnedFollowingTransaction>
                <value>10000</value>
                <footnoteId id="F15"/>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </derivativeSecurity>

    <derivativeSecurity>
        <securityTitle>
            <value>Option to buy</value>
        </securityTitle>
        <conversionOrExercisePrice>
            <value>22.5</value>
        </conversionOrExercisePrice>
        <transactionDate>
            <value>1988-08-08</value>
            <footnoteId id="F14"/>
        </transactionDate>
        <transactionCoding>
            <transactionFormType>4</transactionFormType>
            <transactionCode>J</transactionCode>
            <equitySwapInvolved>0</equitySwapInvolved>
        </transactionCoding>
        <transactionTimeliness>
            <value></value>
        </transactionTimeliness>
        <transactionAmounts>
            <transactionShares>
                <value>0</value>
            </transactionShares>
            <transactionValue>
                <value>0</value>
            </transactionValue>
            <transactionAcquiredDisposedCode>
                <value>A</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <exerciseDate>
            <value>1999-03-27</value>
        </exerciseDate>
        <expirationDate>
            <value>2008-03-27</value>
        </expirationDate>
        <underlyingSecurity>
            <underlyingSecurityTitle>
                <value>Common stock</value>
            </underlyingSecurityTitle>
            <underlyingSecurityShares>
                <value>0</value>
            </underlyingSecurityShares>
        </underlyingSecurity>
        <postTransactionAmounts>
            <sharesOwnedFollowingTransaction>
                <value>2500</value>
                <footnoteId id="F16"/>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </derivativeSecurity>

    <derivativeSecurity>
        <securityTitle>
            <value>Option to buy</value>
        </securityTitle>
        <conversionOrExercisePrice>
            <value>15.625</value>
        </conversionOrExercisePrice>
        <transactionDate>
            <value>1988-08-08</value>
            <footnoteId id="F14"/>
        </transactionDate>
        <transactionCoding>
            <transactionFormType>4</transactionFormType>
            <transactionCode>J</transactionCode>
            <equitySwapInvolved>0</equitySwapInvolved>
        </transactionCoding>
        <transactionTimeliness>
            <value></value>
        </transactionTimeliness>
        <transactionAmounts>
            <transactionShares>
                <value>0</value>
            </transactionShares>
            <transactionValue>
                <value>0</value>
            </transactionValue>
            <transactionAcquiredDisposedCode>
                <value>A</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <exerciseDate>
            <value>1999-10-08</value>
        </exerciseDate>
        <expirationDate>
            <value>2008-10-08</value>
        </expirationDate>
        <underlyingSecurity>
            <underlyingSecurityTitle>
                <value>Common stock</value>
            </underlyingSecurityTitle>
            <underlyingSecurityShares>
                <value>0</value>
            </underlyingSecurityShares>
        </underlyingSecurity>
        <postTransactionAmounts>
            <sharesOwnedFollowingTransaction>
                <value>12500</value>
                <footnoteId id="F16"/>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </derivativeSecurity>

    <derivativeSecurity>
        <securityTitle>
            <value>Option to buy</value>
        </securityTitle>
        <conversionOrExercisePrice>
            <value>14.07</value>
        </conversionOrExercisePrice>
        <transactionDate>
            <value>1988-08-08</value>
            <footnoteId id="F14"/>
        </transactionDate>
        <transactionCoding>
            <transactionFormType>4</transactionFormType>
            <transactionCode>J</transactionCode>
            <equitySwapInvolved>0</equitySwapInvolved>
        </transactionCoding>
        <transactionTimeliness>
            <value></value>
        </transactionTimeliness>
        <transactionAmounts>
            <transactionShares>
                <value>0</value>
            </transactionShares>
            <transactionValue>
                <value>0</value>
            </transactionValue>
            <transactionAcquiredDisposedCode>
                <value>A</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <exerciseDate>
            <value>2001-07-18</value>
        </exerciseDate>
        <expirationDate>
            <value>2010-07-18</value>
        </expirationDate>
        <underlyingSecurity>
            <underlyingSecurityTitle>
                <value>Common stock</value>
            </underlyingSecurityTitle>
            <underlyingSecurityShares>
                <value>0</value>
            </underlyingSecurityShares>
        </underlyingSecurity>
        <postTransactionAmounts>
            <sharesOwnedFollowingTransaction>
                <value>10000</value>
                <footnoteId id="F16"/>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </derivativeSecurity>

    <footnotes>
        <footnote id="F1">Sale of securities pursuant to a pre-arranged stock trading plan established pursuant to Rule 10b5-1.</footnote>
        <footnote id="F2">Represents shares held by trust for the benefit of an insider of Gibraltar Steel Corporation, of which the reporting person serves as one of three trustees and shares voting and investment power and as to which shares he disclaims beneficial ownership.</footnote>
        <footnote id="F3">Represents shares held by a trust for the benefit of reporting person, of which he serves as one of three trustees and shares voting and investment power.</footnote>
        <footnote id="F4">Represents the pecuniary interest of reporting person in shares of Gibraltar Steel Corporation common stock held by Rush Creek Investment Co., LP. The reporting person disclaims beneficial interest in such shares, except to the extent of his beneficial interest.</footnote>
        <footnote id="F5">77,195 common shares held directly.</footnote>
        <footnote id="F6">7,005 shares held by trust for the benefit of a child (Katherine Victoria) of an insider of Gibraltar Steel Corporation, of which the reporting person serves as one of three trustees and shares voting and investment power and as to which shares he disclaims beneficial ownership.</footnote>
        <footnote id="F7">6,700 shares held by trust for the benefit of the son of reporting person.</footnote>
        <footnote id="F8">90,880 shares held by trust for the benefit of insiders of Gibraltar Steel Corporation, of which reporting person serves as one of five trustees and shares voting and investment power and as to which shares he disclaims beneficial ownership.</footnote>
        <footnote id="F9">5,800 shares held by trust for the benefit of the daughter of reporting person.</footnote>
        <footnote id="F10">1,680 shares held by reporting person as custodian for son under UGMANY.</footnote>
        <footnote id="F11">1,680 shares held by reporting person as custodian for daughter under UGMANY</footnote>
        <footnote id="F12">5,940 shares held by trust for the benefit of a child (Elissa Kristina) of an insider of Gibraltar Steel Corporation, which the reporting person serves as one of three trustees and shares voting and investment power and as to which shares he disclaims beneficial ownership.</footnote>
        <footnote id="F13">1,018.39 shares held by Gibraltar Steel Corporation 401(k) Savings Plan f/b/o reporting person.</footnote>
        <footnote id="F14">Dummy Date used to report holdings only.</footnote>
        <footnote id="F15">Grant to reporting person of option to buy shares of common stock under Gibraltar Steel Corporation Non-Qualified Stock Option Plan. Options exercisable at rate of 25% per year.</footnote>
        <footnote id="F16">Grant to reporting person of option to buy shares of common stock under Gibraltar Steel Corporation Incentive Stock Option Plan. Options exercisable at rate of 25% per year.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/Eric R. Lipke</signatureName>
        <signatureDate>2003-06-19</signatureDate>
    </ownerSignature>

</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----