Company: LPX
Filing Date: 2025-03-27
Form Type: DEFA14A
Source: 0001104659-25-028587
Chunk: 0

Company: LOUISIANA-PACIFIC CORP
Filing Date: 2025-03-27
Form: DEFA14A
Chunk 0
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<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section
14(a) of

the Securities Exchange Act of 1934
(Amendment No. )</div>

Filed by the Registrant x

Filed by a Party other than the Registrant ¨

Check the appropriate box:

| ¨ | Preliminary Proxy Statement |

| ¨ | Confidential, for Use of the Commission only (as permitted by 
 Rule 14a-6(e)(2))                                             |

| ¨ | Definitive Proxy Statement |

| x | Definitive Additional Materials |

| ¨ | Soliciting Material under §240.14a-12 |

<div align='center'>Louisiana-Pacific Corporation

(Name of Registrant as Specified in
Its Charter)

(Name of Person(s)
Filing Proxy Statement, if other than the Registrant)</div>

Payment of Filing Fee (Check all boxes that
apply):

| x | No fee required. |

| ¨ | Fee paid previously with preliminary materials. |

| ¨ | Fee computed on table in exhibit                                    
 required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11. |

| Your Vote Counts!                                                                                                                    
 *Please check the meeting materials for any special requirements for meeting attendance.                                             
 Smartphone users                                                                                                                     
 Point your camera here and                                                                                                           
 vote without entering a                                                                                                              
 control number                                                                                                                       
 For complete information and to vote, visit www.ProxyVote.com                                                                        
 Control #                                                                                                                            
 V62577-P23188                                                                                                                        
 You invested in LOUISIANA-PACIFIC CORPORATION and it’s time to vote!                                                                 
 You have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the             
 availability of proxy materials for the annual meeting of stockholders to be held on May 8, 2025.                                    
 Get informed before you vote                                                                                                         
 View the Notice and Proxy Statement and Annual Report online OR you can receive a free paper copy of proxy materials by              
 requesting prior to April 24, 2025. If you would like to request a copy of the proxy materials, you may (1) visit www.ProxyVote.com, 
 (2) call 1-800-579-1639 or (3) send an email to sendmaterial@proxyvote.com. If sending an