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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001181431-10-041455.txt : 20100811
<SEC-HEADER>0001181431-10-041455.hdr.sgml : 20100811
<ACCEPTANCE-DATETIME>20100811163225
ACCESSION NUMBER:		0001181431-10-041455
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100810
FILED AS OF DATE:		20100811
DATE AS OF CHANGE:		20100811

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			ESPE MATTHEW J
		CENTRAL INDEX KEY:			0001192868

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-02116
		FILM NUMBER:		101008413

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ARMSTRONG WORLD INDUSTRIES INC
		CENTRAL INDEX KEY:			0000007431
		STANDARD INDUSTRIAL CLASSIFICATION:	PLASTICS PRODUCTS, NEC [3089]
		IRS NUMBER:				230366390
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2500 COLUMBIA AVE
		CITY:			LANCASTER
		STATE:			PA
		ZIP:			17603
		BUSINESS PHONE:		7173970611

	MAIL ADDRESS:	
		STREET 1:		2500 COLUMBIA AVE
		CITY:			LANCASTER
		STATE:			PA
		ZIP:			17603

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ARMSTRONG CORK CO
		DATE OF NAME CHANGE:	19800611
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd282131.xml
<DESCRIPTION>ESPE GRANTS
<TEXT>
<XML>
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<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-08-10</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000007431</issuerCik>
        <issuerName>ARMSTRONG WORLD INDUSTRIES INC</issuerName>
        <issuerTradingSymbol>AWI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001192868</rptOwnerCik>
            <rptOwnerName>ESPE MATTHEW J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2500 COLUMBIA AVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LANCASTER</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>17603</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President and CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <transactionDate>
                <value>2010-08-10</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>29303</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
                    <value>29303</value>
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            </postTransactionAmounts>
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                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Options - right to buy</value>
            </securityTitle>
            <conversionOrExercisePrice>
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            <transactionDate>
                <value>2010-08-10</value>
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                    <value>226391</value>
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        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Performance-based restricted stock units</value>
                <footnoteId id="F4"/>
                <footnoteId id="F5"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F4"/>
                <footnoteId id="F5"/>
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                <transactionShares>
                    <value>39958</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
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                    <value>A</value>
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    <footnotes>
        <footnote id="F1">Represents restricted stock units granted under the 2006 Long-Term Incentive Plan.  The units will vest in three installments at one, two and three years as follows: 9,767 shares on August 9, 2011; 9,768 shares on August 9, 2012; and 9,768 shares on August 9, 2013 (contingent upon the officer's employment on the scheduled vesting dates).</footnote>
        <footnote id="F2">The options will vest and become exercisable in three installments at one, two and three years as follows:  75,463 shares on August 10, 2011; 75,464 shares on August 10, 2012; and 75,464 shares on August 10, 2013 (contingent upon the officer's employment on the scheduled vesting dates).</footnote>
        <footnote id="F3">No shares of stock may be acquired by exercise of an option after a maximum of ten years from the date the option was granted.</footnote>
        <footnote id="F4">Mr. Espe was granted 39,958 performance-based restricted stock units (&quot;PRSU&quot;) under the 2006 Long-Term Incentive Plan.   The PRSU vest as follows:  (i) 50% of the PRSU (19,979 units) will vest on December 31, 2012 if the stock price target of $55.00 has been achieved; (ii) 50%  of the PRSU (19,979 shares)will vest on December 31, 2013 if the stock price target of $70.00 has been achieved; and if the PRSU do not vest in accordance with clause (i) and/or clause (ii), the PRSU will vest when the applicable stock price target is achieved, but only if they are achieved no later than December 31, 2014.</footnote>
        <footnote id="F5">To the extent that, as of December 31, 2014, the applicable stock price targets set forth above have not been met, the PRSU shall be forfeited.  The Company's closing stock price must be equal to or above the stock price target for 15 trading days in a 20 day consecutive trading day period at any time prior to the applicable time vesting date (or by December 31, 2014) for awards to become vested. Each PRSU represents the right to receive, following vesting, one share of Company common stock, together with a cash dividend payment proportionate to the earned shares.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Michele M. Nicholas, Attorney-in-fact</signatureName>
        <signatureDate>2010-08-11</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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