QuickLinks -- Click here to rapidly navigate through this document

Exhibit 21

LOUISIANA-PACIFIC CORPORATION
AND SUBSIDIARIES

						Domicile
Louisiana-Pacific Corporation						Delaware
	Domestic Subsidiaries
		CP Investment Corp.				Oregon
		GreenStone Industries, Inc.				Delaware
		Ketchikan Pulp Company				Washington
		Louisiana-Pacific International, Inc.				Oregon
		Louisiana-Pacific Timber Company				Oregon
			L-PSPV, Inc.			Delaware
		LP Receivables Corporation				Delaware
		LPS Corporation				Oregon
			L-P Redwood, LLC			Delaware
				L-P SPV2, LLC		Delaware
		New Waverly Transportation, Inc.				Texas
	Foreign Subsidiaries
		Louisiana-Pacific Canada Pulp Co.				Nova Scotia, Canada
		3047525 Nova Scotia Company				Nova Scotia, Canada
		3047526 Nova Scotia Company				Nova Scotia, Canada
			Louisiana-Pacific Limited Partnership			New Brunswick, Canada
				Louisiana-Pacific Canada Ltd.		British Columbia, Canada
					Louisiana-Pacific B.C. Forest Products Limited	British Columbia, Canada
					LP Engineered Wood Products Ltd.	British Columbia, Canada
		Louisiana Pacific de Mexico, S.A. de C.V.				Mexico
		Louisiana-Pacific South America S.A.				Chile
		Louisiana-Pacific Chile S.A.				Chile
	Less Than 51% Owned
		6015018 Canada Inc. (Abitibi—LP Engineered Wood, Inc.)
		Samoa Pacific Cellulose, LLC
		Slocan-LP OSB Corp.
		US GreenFiber, LLC

QuickLinks

Exhibit 21