-----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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 kB38x4nDhfjMTKYrfUx17A==

<SEC-DOCUMENT>0001157523-03-005876.txt : 20031027
<SEC-HEADER>0001157523-03-005876.hdr.sgml : 20031027
<ACCEPTANCE-DATETIME>20031027144054
ACCESSION NUMBER:		0001157523-03-005876
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20031024
FILED AS OF DATE:		20031027

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			LOUISIANA PACIFIC CORP
		CENTRAL INDEX KEY:			0000060519
		STANDARD INDUSTRIAL CLASSIFICATION:	SAWMILLS, PLANNING MILLS, GENERAL [2421]
		IRS NUMBER:				930609074
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		805 SW BROADWAY
		STREET 2:		SUITE 700
		CITY:			PORTLAND
		STATE:			OR
		ZIP:			97124
		BUSINESS PHONE:		5038215100

	MAIL ADDRESS:	
		STREET 1:		805 SW BROADWAY
		STREET 2:		SUITE 700
		CITY:			PORTLAND
		STATE:			OR
		ZIP:			97124

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KASTELIC JOSEPH B
		CENTRAL INDEX KEY:			0001229680

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-07107
		FILM NUMBER:		03958285

	BUSINESS ADDRESS:	
		STREET 1:		80 SW BROADWAY
		CITY:			PORTLAND
		STATE:			OR
		ZIP:			97205
		BUSINESS PHONE:		5038215100

	MAIL ADDRESS:	
		STREET 1:		80 SW BROADWAY
		CITY:			PORTLAND
		STATE:			OR
		ZIP:			97205
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>a4502446_ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<!-- - EDGAR Ease Plus 1.0                                   07/25/03  TT    -->
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>
   <periodOfReport>2003-10-24</periodOfReport>
   <notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0000060519</issuerCik>
        <issuerName>LOUISIANA PACIFIC CORP</issuerName>
        <issuerTradingSymbol>LPX</issuerTradingSymbol>
   </issuer>
   <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001229680</rptOwnerCik>
            <rptOwnerName>KASTELIC JOSEPH B</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>10115 KINSEY AVENUE, SUITE 150</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>HUNTERSVILLE</rptOwnerCity>
            <rptOwnerState>NC</rptOwnerState>
            <rptOwnerZipCode>28078</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
         <isDirector>0</isDirector>
         <isOfficer>1</isOfficer>
         <isTenPercentOwner>0</isTenPercentOwner>
         <isOther>0</isOther>
         <officerTitle>EVP/Spec Prod-Sales</officerTitle>
      </reportingOwnerRelationship>
   </reportingOwner>
 <nonDerivativeTable>
   <nonDerivativeTransaction>
      <securityTitle>
         <value>Common Stock</value>
      </securityTitle>
      <transactionDate>
         <value>2003-10-24</value>
      </transactionDate>
      <transactionCoding>
         <transactionFormType>4</transactionFormType>
         <transactionCode>M</transactionCode>
         <equitySwapInvolved>0</equitySwapInvolved>
      </transactionCoding>
      <transactionAmounts>
         <transactionShares>
           <value>19440</value>
         </transactionShares>
         <transactionPricePerShare>
           <value>12.375</value>
         </transactionPricePerShare>
         <transactionAcquiredDisposedCode>
           <value>A</value>
         </transactionAcquiredDisposedCode>
      </transactionAmounts>
      <postTransactionAmounts>
         <sharesOwnedFollowingTransaction>
           <value>49097</value>
            <footnoteId id="F1"/>
         </sharesOwnedFollowingTransaction>
      </postTransactionAmounts>
      <ownershipNature>
         <directOrIndirectOwnership>
            <value>D</value>
         </directOrIndirectOwnership>
      </ownershipNature>
   </nonDerivativeTransaction>
   <nonDerivativeTransaction>
      <securityTitle>
         <value>Common Stock</value>
      </securityTitle>
      <transactionDate>
         <value>2003-10-24</value>
      </transactionDate>
      <transactionCoding>
         <transactionFormType>4</transactionFormType>
         <transactionCode>S</transactionCode>
         <equitySwapInvolved>0</equitySwapInvolved>
      </transactionCoding>
      <transactionAmounts>
         <transactionShares>
           <value>19440</value>
         </transactionShares>
         <transactionPricePerShare>
           <value>16.75</value>
         </transactionPricePerShare>
         <transactionAcquiredDisposedCode>
           <value>D</value>
         </transactionAcquiredDisposedCode>
      </transactionAmounts>
      <postTransactionAmounts>
         <sharesOwnedFollowingTransaction>
           <value>29657</value>
            <footnoteId id="F1"/>
         </sharesOwnedFollowingTransaction>
      </postTransactionAmounts>
      <ownershipNature>
         <directOrIndirectOwnership>
            <value>D</value>
         </directOrIndirectOwnership>
      </ownershipNature>
   </nonDerivativeTransaction>
 </nonDerivativeTable>
 <derivativeTable>
   <derivativeTransaction>
      <securityTitle>
         <value>Stock Option</value>
      </securityTitle>
      <conversionOrExercisePrice>
         <value>12.375</value>
      </conversionOrExercisePrice>
      <transactionDate>
         <value>2003-10-24</value>
      </transactionDate>
      <transactionCoding>
         <transactionFormType>4</transactionFormType>
         <transactionCode>M</transactionCode>
         <equitySwapInvolved>0</equitySwapInvolved>
      </transactionCoding>
      <transactionAmounts>
         <transactionShares>
           <value>19440</value>
         </transactionShares>
         <transactionPricePerShare>
           <value>0.00</value>
         </transactionPricePerShare>
         <transactionAcquiredDisposedCode>
           <value>D</value>
         </transactionAcquiredDisposedCode>
      </transactionAmounts>
      <exerciseDate>
         <value>2001-02-05</value>
            <footnoteId id="F2"/>
      </exerciseDate>
      <expirationDate>
         <value>2010-02-05</value>
      </expirationDate>
      <underlyingSecurity>
         <underlyingSecurityTitle>
           <value>Common Stock</value>
         </underlyingSecurityTitle>
         <underlyingSecurityShares>
           <value>19440</value>
         </underlyingSecurityShares>
      </underlyingSecurity>
      <postTransactionAmounts>
         <sharesOwnedFollowingTransaction>
           <value>0</value>
         </sharesOwnedFollowingTransaction>
      </postTransactionAmounts>
      <ownershipNature>
         <directOrIndirectOwnership>
           <value>D</value>
         </directOrIndirectOwnership>
      </ownershipNature>
   </derivativeTransaction>
 </derivativeTable>
   <footnotes>
      <footnote id="F1"> Reporting person also indirectly holds 3,325 shares in the Louisiana-Pacific Salaried 401(k) and Profit Sharing Plan (by trust).</footnote>

      <footnote id="F2"> Option granted pursuant to Louisiana-Pacific Corporation 1997 Incentive Stock Award Plan. Shares vest in three equal annual installments, with the first installment vesting on this date.</footnote>
   </footnotes>
   <ownerSignature>
      <signatureName>Anton C. Kirchhof, Attorney-in-fact for Joseph B.Kastelic</signatureName>
      <signatureDate>2003-10-27</signatureDate>
   </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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